Great news. That means we have 3/4 spots covered for the CB positin and also, both Demichelis and Mangala are suited as LCBs. That would suggest we don't really count with Rekik for at least another season, which I don't really mind, and I guess that's a major opinion here. However, it will be interesting whether we stick with Boyata again, I would replace him with Denayer already, but again, it's about the decision whether a full season with 30+ games for Jason isn't better than learning alongside Kompany, Demichelis and co. but play only like 15 games.
Also, if you consider this contract extension, you might tend to agree with this tweet:
View From A Blue @viewfromablue 22m22 minutes ago
Also, does Demichelis's new deal suggest Pellegrini is staying? Those two are linked so closely - hard to see MD staying if Pellegrini left.
(Although Simeone also bought him on a free transfer just before we grabbed him from Atleti. :D )