Like I said some pages back while besides the fact Umtiti and Abidal both play CB/LB and both played for Lyon, their play style is nothing a like.
If we get Umtiti I would prefer for him to be a CB only and for us to get a real LB. but knowing us we would use the "Umtiti is our new Abidal! he will be play both LB and CB!" It would be like our third season in a row that we used some sort of excuse.
Adriano?-Oh don't worry guys he's still good! despite it being completely obvious he was pretty much done at the top level for us. with various injuries and just overall decline.
Mathieu-He's tall like Abidal and played LB for most of his career! he's still a great option at LB! He's not in his 20s anymore and he's completely converted into a CB and with the various ankle issues and Calf problems he can't play there much anymore like he could in the past. (Thankfully he's a great CB for us).
Umtiti is better off being used only as a CB and only that. I just don't want to go yet another summer without buying a Real LB.