I don't see Barisic (or any of our big players) leaving in this window, but it's entirely possible that he's interested in a move to Roma in the summer and is therefore holding off on a contract extension.
Whatever we want to say about ourselves and the possibility of being able to offer him Champions League football next season, Roma are also a big club and Serie A a significantly better league with Italy also much closer to home for him too.
It'd be understandable if he was considering it assuming their interest is genuine.
If we put on our cold hard business heads for a moment, Barisic is a player we should probably be looking to sell this summer.