Multiple NFL executives expect Trevor Lawrence to leave Clemson for the 2021 NFL draft.

"I'd be shocked if he went back [to Clemson]," one source told ESPN.

"You have a better chance of winning the Boston Marathon than he does of going back to school," another source said.

"Any person in that stratosphere would go, and history tells me he goes out," a third source told ESPN.

Lawrence suggested he could remain at Clemson for his senior season in comments this week.

Dabo Swinney said two days later that he would "be surprised" if Lawrence, the projected No. 1 pick in the 2021 draft, is back with the Tigers next year.

Andrew Luck was the last prospective first overall pick to return to college despite having the opportunity to enter the draft early. Luck returned to Stanford for his redshirt junior season in 2011.

Matt Leinart also returned to USC for one extra season before entering the NFL in 2006.