Pure conjecture but if Zaha could be obtained for say £50mill + Bolasie and McCarthy it would represent good business. An ‘80mill’ player, loose 2 non contributing squad members and wage for wage outlay probably remains about the same.
£31.5m you say.....
https://www.dailymail.co.uk/sport/football/article-7247829/Barcelona-admit-theyve-31-5m-loan-help-cover-Antoine-Griezmann-signing.html