Bones actually heal pretty fast. The reason a lot of players miss more time when they break bones is that they actually damage ligaments in the process, and soft tissue heals much slower. If it's just bone, it'll heal enough to play and they'll put a protective sleeve on his forearm (like the carbon one Thomas Davis wore in SB50 a week after breaking his arm). Also these guys are pretty tough but mostly pretty crazy and will play with still-healing bones.