"It's tough to replicate what he can do. Certainly one of the most gifted receivers in the NFL. That makes it difficult to replace that. But we have other guys that need to step up and, I think, will step up for us," Ryan told reporters.
"In those situations, we all have kind of been there before. It's part of playing in this league. It's a tough, physical game. He's got a great mindset about it, though. He really does. He's positive. He's upbeat."
The Falcons have had a disappointing start to the season, winning just one of their opening five matches to leave themselves third in the NFC South.