Genuine question, I don't know the answer, other leagues seem to have a better standard of CB players.

FB and CB are different positions...fyi...

FBs are RB and LB. Ex: Kyle Walker, Zabaletta...etc.

CBs are your central defenders...: Ex: John Terry, Cahill...etc.

I think Spurs had the best LB and RB last season in Rose and Walker.

Depends on what you want. Attacking-wise Bellerin seems like a solid shout, Kyle Walker if you want a combination, and I thought Coleman was probably the best defender on the flank.

I'd give shout-outs to Valencia and Alonso though. Clyne probably deserves at least a mention as well.

I think Kyle Walker for right back!!!
he is pretty insane tbh!!

For me it's probably Antonio Valencia/Kyle Walker at RB, then Marcos Alonso on the left side.

if Alonso can be counted as a full back even.,, Azpilicueta almost never has a bad game. Might be biased but for me he's the best. I'd have a solid defensive full back over creative offensive options mentioned above every day

@KTB Azpi is excellent as a FB but he is now mostly playing as CB under Conte, however, he might get to see more playing time at his former position now that Chelsea got Rudiger, thought?

Valencia is pretty good in my opinion, one of the best player for United last season. ;) Walker, Alonso, Bellerin are all pretty good as well.

Valencia is really good attacking but he is quite predictable and sometimes lacks defensive qualities.

@nigelpayne Bah, defense is overated! :P ... XD