Cedric's contract runs out in 2020, so that means we would either have to sell next season or renew long term. Cedric's been pretty good, but not so good I don't think we can improve. I don't know much about this Marlon dude, but it sounds like he is quite promising but may need some time. So I think it's good to have a potential competition for spaces and the ability to move Cedric on. Maybe we go three at the back this year, and see how it works out. Or have a couple different formations and Marlon could end up playing some CB and some RB should Cedric need a rest or get hurt, or in certain games where we need less going forward maybe and more defensive presence.
I hope that this is not our big CB move. But OTOH, it's never bad to sign up talented young players for the future. I don't think we should be looking to offload Cedric and hopefully he stays. If it works out that way, I think this is a pretty decent move.