ORCHARD PARK, N.Y. (AP) -Offensive lineman Brad Butler signed a contract extension with the Buffalo Bills on Wednesday, following a season in which he took over the starting right guard spot.

Terms of the extension were not immediately available, but Butler's new deal is expected to provide a significant raise over the $445,000 base salary he was scheduled to make this season. Buffalo's fifth-round pick in the 2006 draft out of Virginia had two years left on his contract and was scheduled to make a base salary of $530,000 in 2009.

The Bills also signed rookie tight end Derek Fine, the second of Buffalo's two fourth-round draft picks. Selected 132nd overall, Fine was a three-year starter at Kansas, where he set the school record for tight ends with 98 career receptions. He finished with 1,009 yards receiving and 10 touchdowns.

Fine is expected to compete for a backup spot behind returning starter Robert Royal. Fine is the third of Buffalo's 10 draft picks to sign.

The Bills offensive line is still unsettled with left tackle Jason Peters holding out for a new contract. Peters was fined by the team after he missed Buffalo's two mandatory minicamp practices earlier this month.