Updating previous reports, Houston Texans DE J.J. Watt (hand, groin, abdomen, back) had five torn core muscles surgically repaired in the offseason. According to a source, Watt had partially torn left and right abdominals and a partially torn right adductor longus. He also had a fully torn left adductor longus and a fully torn left adductor pectineus, which are two of the three muscles that connect the pelvic bone to the left thigh bone.

Footballguys View: Watt was far more beat up than we thought he was. They need him back to 100 percent to keep this defense playing at the high level it has the last few years.

Oakland Raiders TE Clive Walford’s role is expected to be expanded in 2016.

Updating a previous report, three teams are interested in free-agent WR Percy Harvin (Bills), and he’s definitely planning on playing again in 2016 after contemplating retirement.

Cleveland Browns QB Josh McCown, who is expected to be released or traded, said he would like to remain with the Browns and compete with QB Robert Griffin III. McCown also said he’s open to sitting behind Griffin and helping him if that’s what the organization chooses. ‘The Browns’ quarterback woes have been well-documented. For us to put a good quarterback on the field who can be productive and help our team win, that’s our ultimate goal,’ McCown said. ‘We’ll see how it plays out, but I look forward to working with him.’

Mississippi WR Laquon Treadwell is in town visiting with the Cleveland Browns Thursday, March 31.

Ohio State LB Joey Bosa is visiting with the Cleveland Browns Thursday, March 31, according to a source. Bosa is rated as the top player at his position this year and No. 4 overall player in this year’s draft.

Free-agent DE Ricardo Mathews (Chargers) signed a one-year deal with the Pittsburgh Steelers Thursday, March 31. Financial terms of the deal weren’t given.

Oakland Raiders TE Mychal Rivera is expected to be available in a trade as the NFL Draft approaches.

Penn State QB Christian Hackenberg will work out for the Philadelphia Eagles April 8.

Oakland Raiders head coach Jack Del Rio said the Raiders don’t have a glaring need for another running back with RB Latavius Murray in the picture. There has been talk this offseason that general manager Reggie Mackenzie is looking for help in the backfield. Oakland ranked 28th in the run with 91.1 yards per game and just 3.9 yards per carry in 2015. Del Rio said any new running back Oakland adds will have a chance to compete for carries. ‘We would like to add somebody in the backfield at some point, but it’s not like it’s a glaring need,’ Del Rio said. ‘We do have a good player there.’