I'm having second thoughts about giving Nascimento AML role...

here's the story...

I have Juan Mata who is a high end 5* player, AML/AMC. He is 26 years old but he'll still get to low end 6* this season through natural growth and normal training. If I keep him in my first team then there is no need to give AML to Nascimento and that is that for the season in terms of buying players. But I will have to replace Mata through the scouts and I will have to find an AML/ML or AML/AMC, 22 y/o... Not guaranteed but would last my team for a few seasons at least.

Nascimento is a mid 6* striker and if we give him the AML role, we can instantly get another striker from the Scouts... His name is Jonathan Crawford lol and is 7 SP away from 7*. This means I won't have to worry about AML but this requires more training and will require more tokens and green packs to teach him the new role.

What should I do guys?