Gronk's arm may be infected, which could force him to miss week 1
There may be an infection in his forearm, which would mean the doctors have to take out the plate that they surgically inserted earlier and put in a new one.
If that's the case, it would set his recovery time back and could threaten his status for week 1.
This could be huge news for the Patriots, who use their tight ends more than any team in football. If Gronkowski is healthy, the offense should do well. If not, there will be added pressure on the offense to fill in the gap, and it could result in some struggles, particularly with Wes Welker's departure to Denver.