The best you can do is promote and sell a few players in  the off season.. With  3 new draft picks,0- 1 will be good.  Your excused if that made you laugh. I always get a good chuckle at the  talent in the draft.
But try to promote.  Rebuild in the off seasons to your liking and wants the game is based on younger players  from what I understand.  What you consider old and young for  your ball club is up to you.