You can only compete with what's in front of you.
Imagine Pep and Klopp were ar Barcelona and Madrid respectively.
Then Ole and Mou might have won a PL each.
Then people would say their stints were a success.
We don't need loads out and loads in.
We only need to sell / release the players we really don't use (Martial, vdb, Sancho?).
Maybe sell the profitable ones like Mc Tominay, Maguire, Rashford?.
And bring players that are better than what we have...