I would personally go for him looks more ready for the PL than Ruben Diaz who I think youre a big fan of Mike but think it might be a step to far for him. Plus he plays on the right hand side which you already have Lindelof for.He's good but more raw, probably isn't ready to be our first defender and we're not actually sure he's for sale.
We don't need him to be versatile at right back tbh