Dont you know how old Pelle is? 31 years old on soccer world is not young anymore, young player should be less than 25years old. That's the reason why he moved to China, 31years old player for European team is not good anymore unless he has special skills like Ibrahimovic.
Yes I agree, in European league not many palyers can be consistent to give best performance if the old 31 years or more. I sure, the best performance Ibrahimovic is only 1st on MU, after that will be move to China or Arab league.
old players doesn't mean will have poor performance too as you can see here Ibrahimovic has maintain his performance by playing with several teams in his own career and from Juventus until PSG he always could be made a lot of goals and currently in Manchester United also he has playing with good performance