Attacking full back - Alonso is not.
He doesn't have that engine to do Attack & Defend. Simples.
Nah man. Alonso has a great engine.
He just lacks speed and strength.
He wouldn't work as a winger, he'd be marked out and keep passing it backwards (what he does now when he's fronted by a player defending). He only works when given space/ghosting im/out running the winger because he has a better engine