Despite the fact Ronaldo will be gone in 2-3 seasons - We would gain more from Ronaldo than we would from Pogba
Ronaldo makes players want to join us - He is the perfect player to make others want to join us.
Marketing level - See Instagram (I think he is no`1 in being followed there)
We are not Real and Barcelona - Our brand still needs to be vastly expanded
In terms of play - There is no point to even talk about Ronaldo being in the talk of all time greats while Pogba isnt (even if he is great)...