Say Tosun earns 80k a week at Everton - has 2 years left on his deal. Doesnt play in that time, loses place in the international set up and when his contract expires no one realistically touches him bar some 2nd division outfit offering him peanuts.
Or he joins a Celtic for 40k a week on a 4-5 year deal - earns roughly the same as he would at Everton or more, keeps his place in the international set up, plays regular football and also has the chance to get a move elswhere if he performs well and a higher paid contract.
People seem to have this warped opinion that the likes of Tosun, Sandro, Bolasie are happy never playing football and want to leech the club dry.
Thats not the case.