Say if I wanted to tank the new season, what should I do?

Been saving up on boosters and tokens, don't intend to buy any new players, and furthermore I'm on a 35T budget since I don't buy tokens and don't have offers available to me. I'm qualified for the cup and CL though, and would like to compete for these two as best as I can, for the prize money if not for the title itself.

Question here is - should I buy younger players so I can have an extra season to train them? Should I also add skill points to my players in order to compete effectively? If so, does that mean I will draw tougher league/cup/CL opponents next season?

Any advice guys?