Testing Player in Signings

I want to feature that allow test players before signing. Like 3 matches for every player. For example you took Vini 120 in your squad from Signings but only for 3 H2H matches. I think it will increase payments. You know its like giving first dose for free but next times they pay for dose. Scouting Camp give experience but not experience testing player in your squad. Its give different sense