Before flying back from Japan, Lampard emphasised Chelseaâ€™s need to re-ignite their domestic season, starting with the Capital One Cup quarter-final tie at Leeds on Wednesday.
He said: "We have to pick it up for Leeds. We have to go there and stand up and get our form back at home.
"Win this and weâ€™re in the semi-final and with the possibility of a decent draw but weâ€™ve got to win the games. Itâ€™s tough to go to Elland Road. Thereâ€™s a rivalry. Weâ€™re aware of it and we have to play with passion and do the physical side of things. Theyâ€™re going to be right at it. We canâ€™t expect to go up there and tap it around and get a result."