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Chelsea dismissed Rosenior after its 3-0 Premier League defeat to Brighton and Hove Albion in midweek, a result which stretched the Blues' losing streak to five top-flight games, in which they have not scored a goal.

In fact, Chelsea's only win in its past eight matches in all competitions came in the FA Cup quarter-final, when it thrashed League One Port Vale 7-0 to book its place at Wembley.

Calum McFarlane will take charge of the club until the end of the season, starting with the FA Cup clash, and Farke is wary that it could act as a reset for the players.

"When some top-class players are showing the basics and have no excuses, then it can be a really, really dangerous side," Farke said. "For that, I expect a Chelsea side who will be back to their best.

"I expect a side who will try to prove that it's a fresh start, and right now the burden has been lifted, and they want to show what they're capable of.

"But we have shown also against the top sides that we're capable of bringing a performance and to deliver a result. We are greedy also to be successful in this game.

"We play a side which is packed with top-class players, with unbelievable potential.

"Chelsea have one of the most talented squads in world football, I would say. So many exciting players, exciting young players, who can develop.

"Of course, they are probably not happy with their recent results, but I think in this game, an FA Cup semi-final, it doesn't play so much of a significant role what happens in the league.

"We are a bit the underdog anyhow, but also the underdog who has a chance."