If the quality of players and tactic are good and strong, one Plan A is enough. Look at Pep's Barcelona, now Man City and Liverpool, they don't need a big, tall guy as their Plan B, because their Plan A already dominate most of the games. If we always say missing Fellaini, it just reflects that our team's Plan A is not strong enough, we should buy players to improve our Plan A, instead of keeping Fellaini for Plan B. So selling Fellaini is an improvement, it means we finally understand we shouldn't rely on him to break up the game that often, and the next step is to get rid of the useless players, spend money to bring in quality players next season.