The quarterback-needy Buffalo Bills have turned their attention to Kevin Kolb.ESPN reported Saturday night that Kolb, a Stephenville graduate and University of Houston standout, agreed to a two-year deal worth up to $13 million with the Bills.Kolb spent the past two seasons in Arizona, where injuries hampered his opportunity to prove himself as a starter. The Cardinals were left with little choice but to release Kolb on March 15 in a move that came before they were set to pay him a $2 million roster bonus and saved the team about $7 million in salary cap space.The Bills are in no position to be choosy. They’re down to one experienced quarterback on their roster — Tarvaris Jackson — after releasing returning starter Ryan Fitzpatrick earlier this month.General manager Buddy Nix has also expressed an intention to select a quarterback high in the draft next month.The Bills are once again in rebuilding mode under rookie coach Doug Marrone, who took over in January after Chan Gailey was fired following three losing seasons. Marrone is an offensive specialist who spent the past four seasons reviving a struggling football program at Syracuse.Kolb was being counted on by the Cardinals to become their franchise quarterback after they acquired him in a trade with Philadelphia in the summer of 2011. They then signed Kolb to a five-year, $63 million contract with $20 million guaranteed.Kolb, however, got off to a 1-6 start and had trouble adapting to the offense of coach Ken Whisenhunt, who was fired after last season. He then hurt his toe and was eventually sidelined for the rest of the season because of a concussion.Last season, Kolb helped the Cardinals get off to a 4-0 start before being sidelined for the rest of the season with torn rib cartilage.Kolb has struggled with consistency. He has completed 59.5 percent of his passes while throwing 28 touchdowns and 25 interceptions in 34 career games.Grimes to DolphinsCornerback Brent Grimes, who missed almost all of last season with an Achilles’ tendon tendon injury, signed a one-year contract with the Miami Dolphins on Saturday.Grimes started 28 games for the Atlanta Falcons in 2010-11 but was hurt in their opener last year. He declined to predict whether he would be able to take part in off-season practices beginning in May.Grimes is expected to start for the Dolphins, who lost Sean Smith via free agency to the Kansas City Chiefs.