BUFFALO, N.Y. (AP) — Stefon Diggs is headed to the Buffalo Bills in a splashy trade intended to boost quarterback Josh Allen’s development.

Buffalo is set to acquire the big-play receiver and a seventh-round draft pick from the Minnesota Vikings in exchange for four draft picks, a person with direct knowledge of the move confirmed to The Associated Press on Monday night.

The Bills agreed to give up their first-round selection this year (22nd overall) and three other picks to land a fifth-year player who has topped 1,000 yards receiving in each of the past two seasons, the person said. The person spoke to the AP on condition of anonymity because the trade cannot be completed until the start of the new league year Wednesday.

The deal was first reported by FoxSports.com.

The Vikings will also get Buffalo’s fifth- and sixth-round draft picks this year, and a fourth-round choice in next year’s draft.

In Diggs, the Bills provide Allen with an established wideout on an offense that finished 24th in the NFL in yards gained last season, and 26th in yards passing. Allen enters his third season still attempting to address questions regarding his accuracy that have followed since being selected in the first round of the 2018 draft.