Chelsea won against Brighton in the cup on midweek so at least they are optimistic of getting another good result.Both teams will be a bit tired as both played midweek and both teams qualified further in the cup,I know Chelsea results are really bad so far in the league and they need desperately to win against this opponent or otherwise if they happen to get another lost game that would be for me the final blow to them which I assume they will not be able to recover anymore and most likely they will be in Championship this year,so this is a final for them which they have to win.
Chelsea has good capital for their success in winning the match against Brighton. This victory should be able to revive the players' enthusiasm for the match against Fulham in the EPL. Pochettino must really be able to make his players fight to get full points in order to rise in the standings. However, if they fail to maintain their good performance again, the Blues will get worse in all the competitions they participate in. For now I really wouldn't bet on Chelsea.