The Bills have agreed to a deal to bring quarterback Mitch Trubisky back to Buffalo, according to multiple reports Wednesday.The former No. 2 overall pick mutually agreed to part ways with the Pittsburgh Steelers on Feb. 12, with two years left on a three-year, $19.4 million contract.Now he’s reportedly heading to Buffalo to reprise the role of Josh Allen’s backup. Trubisky, 29, spent the 2021 season in Buffalo seeing limited action in support of Allen, going 6 of 8 for 43 yards and rushing for 24 yards and a touchdown over six games (no starts).Trubisky joined the Steelers as a free agent in 2022, the same year Pittsburgh selected quarterback Kenny Pickett in the first round of the draft. Trubisky began that season as the starting quarterback but soon gave way to Pickett.While Pickett dealt with injury and regression in 2023, Trubisky made two starts before the Steelers eventually turned to Mason Rudolph, who helped guide the team to a wild-card berth.