What do the parts in parentheses mean?
His football future (now a no-no), he had no idea what to do, his indecision and continual (mind-changing) getting him (a family rep) for flightiness.
a no-no- something he won't be doing in the future- his football career hopes have ended
mind-changing- couldn't decide what he wanted to do and kept thinking of new or different things
rep = reputation