They were overachieving a little until now but I still see them firmly in the top 6. Liverpool, City and Leicester are probably out of their reach. Spurs and Man Utd could maybe finish above them but I see this as a fair fight among that 3 teams for the 4th spot. Arsenal is horrible this season and I expect them to continue loosing points in most of the away games. Maybe Wolves have the strength to try to push inside top 6 but I don't think so.
Anyway, if somebody wants to bet with me that Chelsea will finish outside top 6 at the end of the season I am up for it.