That's the whole problem with this Ebron discussion. People who did not want Dennard or Clinton-Dix leaned on the fact that it takes a defensive back 2-3 years to develop. However, with Ebron, we aren't allowed to be critical if he's not a game changer in year 1, and it's okay for him to take a year or two to pan out.
Ebron better be a game changer from day 1. That's why he was drafted. Team wants to win now. They want that explosive offense. If this offense is anything less than stellar (damn the excuses, injuries), either Mayhew needs to get canned, or it's time to look for a new QB.