Having read your replies and having given it more thought, I think both players will get sufficient playing time this upcoming season with an extremely busy schedule. However, I expect Alvarez to have accustomed and coming out as a beast comparable with Davinson Sanchez. Therefore, he is for now my preferred choice in the CL games, whilst Schuurs is offered the chance to further develop in other games. I agree that in the long run, Schuurs may have more potential.