Jackson underwent the NFL's concussion protocol after leaving Sunday's loss to the Falcons, the

He passed the league's baseline neurological exam and is expected to play Thursday when the Texans host the Colts.

Jackson agreed to a four-year deal with Houston on Saturday, ESPN's Adam Schefter reports.

Jackson isn't considered a shutdown corner, but he was one of the top players in a thin cornerback free agent class. Jackson is inked in as a starter at one of Houston's corner spots, while Johnathan Joseph is penciled in at the other.

Jackson and the Texans are engaged in ongoing negotiations, the Houston Chronicle reports.

Jackson is inching toward becoming a free agent for the first time in his career. He had some struggles early in his career, but the 20th overall pick in the 2010 draft has improved steadily through the years. He had 57 tackles and three interceptions in 13 starts in 2014.

Jackson is unlikely to receive the franchise tag, the Houston Chronicle reports.

The tag for cornerbacks will be approximately $13 million, and while Jackson has proven to be a solid starter, he isn't quite worth that kind of money for just one season. The Texans still want to keep him around, so the two sides will likely try to hammer out a multi-year deal before free agency begins in March. Jackson is averaging two interceptions and 10 passes defensed through his first five NFL seasons, but he hasn't reached 60 tackles since his rookie campaign of 2010. To be fair, he did record 56 and 57 the past two seasons, despite being limited to 14 and 13 games. On a per-game basis, Jackson provided reasonable IDP production for a cornerback in 2014.

Jackson (knee) returned to the lineup Sunday after missing three weeks, the Houston Chronicle reports. "I felt good," Jackson said. "I didn't have any trouble with it. It was so good to get back in a game situation."

Jackson finished with four tackles and was part of a defensive unit that shut down the Jaguars in the second half.

Jackson (knee) is active for Sunday's game against the Jaguars.

Jackson has missed the last three games with an MCL sprain, but he'll return to face off against a Jaguars offense that ranks 28th in passing offense.

Jackson (knee) "should be ready to go" this weekend against the Jaguars, the Houston Chronicle reports.

Jackson has missed three games due to a medial collateral ligament sprain.

Jackson (knee) could return this week against Jacksonville, the Houston Chronicle reports.

The cornerback has missed the last three games due to a knee injury that was originally projected to keep him out three-to-four weeks.

Jackson suffered a sprained medial collateral ligament during Houston's loss to Philadelphia in Week 9, the Houston Chronicle reports. He's expected to miss three-to-four weeks.

The good news for the Texans is that one of those weeks, Week 10, is their bye week. A.J. Bouye, who had a 51-yard interception return for a score last week, will start until Jackson is ready to return.

Head coach Bill O'Brien said Monday that Jackson is day-to-day, but refuted the report that Jackson's injury is to his knee, the Texans' official site reports. "No, I didn't say anything about a knee," O'Brien said. "You didn't hear that from me."

O'Brien appears to have learned much from his days working for head coach Bill Belichick in New England. Now we have an undisclosed injury making Jackson day-to-day heading into the Texans' bye week.

Jackson is questionable to return to Sunday's game against the Eagles with a knee injury, ESPN's Tania Ganguli reports.

More on Jackson's status as we know it, but entering Week 9, the cornerback had recorded 41 tackles and a pick, thus making him an IDP candidate in deeper formats.

Jackson had two tackles and an interception in Sunday's win over Oakland. The pick was Jackson's first since 2012.

Jackson returned the pick 65 yards to set up a Randy Bullock field goal in the second quarter. It came when the Raiders were driving to make it a one-score game.

The Texans have added slot corner to CB Kareem Jackson's duties.

Houston struggled to defend the slot last season, after losing Glover Quin in free agency. Jackson will presumably start outside and move into the slot in sub-packages, although it's unclear who will replace him on the perimeter in nickel and dime. The move could help Jackson's IDP value, as he'll play closer to the line of scrimmage. It also helps his versatility in a contract year.

Texans CB Kareem Jackson (rib) will return this week.

The Texans need all hands on deck to be competitive with the Patriots. Due to a cracked rib, Jackson had been sidelined since Week 10.

Texans declared LCB Kareem Jackson, QB T.J. Yates, FS Jawanza Starling, CB Elbert Mack, OT Andrew Gardner, OG Cody White and DE Tim Jamison inactive for Week 12 against the Jaguars.

Jackson is dealing with a broken rib, and is week to week. Brice McCain is starting opposite Johnathan Joseph. McCain will kick inside in nickel packages, with Brandon Harris manning the outside.

Texans LCB Kareem Jackson confirmed he has a fractured rib.

The broken rib is causing Jackson to have "difficulty lifting his arm," per coach Gary Kubiak. He's been ruled out for Week 12 against Jacksonville. The Texans will likely turn to Johnathan Joseph as a shadow corner, while Brice McCain starts opposite him and Brandon Harris plays outside in nickel packages.

Texans LCB Kareem Jackson (ribs) has been ruled out for Week 12.

Look for Johnathan Joseph to shadow Cecil Shorts on Sunday while Brandon Harris and Brice McCain match up with Ace Sanders and Kerry Taylor. Jackson also missed Week 11 and is likely dealing with at least one cracked rib.

Texans CB Kareem Jackson (chest) will be a game-time decision for Week 11.

Jackson bruised his chest in last week's loss to the Cardinals. With the Raiders' inept passing attack on tap for Sunday, the Texans are unlikely to force Jackson into the lineup. Brandon Harris would start opposite Johnathan Joseph if Jackson can't go.

Texans interim coach Wade Phillips said Monday CB Kareem Jackson (chest) has an "outside chance" to play in Week 11.

The Texans may not rush Jackson back because they're playing the nose-diving 3-6 Raiders at home, but it's good news he avoided a long-term injury. Jackson was originally feared to have suffered a rib fracture in Sunday's loss to the Cardinals. As it turns out, Jackson has a "chest contusion," or bruise.

Texans CB Kareem Jackson is done for the day in Week 10 with a rib injury.

The Texans initially called Jackson "questionable" to return. He went to the locker room and was later ruled out, indicating that X-rays showed a fairly significant rib injury. Brandon Harris is now in the game opposite Johnathan Joseph. Brice McCain remains the Texans' slot cornerback.