A few chauvinistic choices: Standard de Liège, they have probably the most lethal (young) striker partnership in Belgium at the moment. Chelsea, because of the Belgian delegation. Tottenham as well, for the same reason.
Others: PSV, they have quite a few talented young players. Atletico Madrid, I tried my hand at them for the first time on FM12 and failed miserably (granted, it was only my third save ever and I started on Sunday League experience, but still) - haven't managed them since, so I'm looking to prove a point there. Maybe Monaco as well.