The Clemson Tigers named true freshman Trevor Lawrence as their starting quarterback this week, and that caused now-backup Kelly Bryant to transfer.

Obviously, that’s a huge blow to Clemson, even though the Tigers were handing the reins over to Lawrence anyway.

How big of a deal is Bryant leaving? According to former Clemson QB Tajh Boyd, who appeared on ACC Radio on SiriusXM on Wednesday, the Tigers can’t win a national championship without him:

“They can’t win a national championship this year without Kelly Bryant,” he said. “Can’t do it. There are going to be times now where Trevor doesn’t have that safety net. The good part for Trevor is that now he has no choice but to step in. He’s going to have to find a way to get through it, because there’s not going to be somebody back there who can step up and say, ‘You know what? I got it. Take a breather. I’m going to come finish the game for you.'”

Clemson will face some tough tests down the stretch, but Boyd doesn’t think his former team will be able to handle teams like Alabama or Georgia without Bryant backing up the talented freshman.