i played D1 ball man and i think if you are 25? right now and still not planning on going back for 2-3 years (28-29 years old)your chances are slim. football isn't like any other sport. when you get out of the contact for a few years i think it's really really tough to get back into it. it is also very very hard to get speed back after a period that you haven't kept it up. especiallly if that has been in terms of years.
also, like all sports, football is largely dependent on footwork, lateral movement, and explosion. again, IMO, these are things that, when neglected for a period of time, do not come back easily if at all. sorry to be downer but while i was playing ball i saw a few guys your age that were in your same type of situation, and could never get back to a competitive state again. sorry to be a downer man, but i'm just being honest.