Buffalo Bills head coach Sean McDermott, left, speaks with quarterback Mitchell Trubisky prior to a game on Dec. 26 in Foxborough, Mass. (AP file photo)

A person with knowledge of the deal tells The Associated Press that the veteran quarterback and the Pittsburgh Steelers have agreed to terms on a two-year contract that will give Trubisky a chance to compete for the open starting job following Ben Roethlisberger’s retirement in January.

The person spoke to the AP on the condition of anonymity because the deal was not yet official.

Trubisky, 27, joins the Steelers after spending 2021 backing up Josh Allen in Buffalo following a flame out in Chicago. The second overall pick in the 2017 draft spent four uneven seasons with the Bears, going 29-21 as a starter while passing for 10,652 yards with 64 touchdowns against 38 interceptions.

Trubisky joins a quarterbacks room that includes longtime Pittsburgh backup Mason Rudolph. The team is also expected to bring back Dwayne Haskins, who served as Pittsburgh’s third quarterback last season.

Buffalo Bills quarterback Mitchell Trubisky warms up before a game against the Houston Texans on Oct. 3 in Orchard Park, N.Y. (AP file photo)

The move is among the first of what will likely be a busy free-agent market for Pittsburgh, which is looking to fill holes at several positions following a 9-7-1 season that ended with a blowout loss to Kansas City in the first round of the playoffs.

The Steelers entered free agency with nearly $29 million in cap room, a significant chunk for a franchise that typically has little to spend on the open market. That figure could grow before the start of the new league year on Wednesday if Pittsburgh parts with linebacker Joe Schobert, among others.

Trubisky spent four turbulent seasons in Chicago, which traded with San Francisco to move up one spot in the first round of the 2017 draft. He failed to live up to the considerable hype. Though there were flashes early — he was a Pro Bowler in 2018 after throwing for 3,223 yards and 24 touchdowns while leading the Bears to the playoffs — he was unable to sustain it.