Tottenham have signed Swansea duo Ben Davies and Michel Vorm, with Gylfi Sigurdsson moving in the opposite direction.
Manchester United executive vice-chairman Ed Woodward says the club is prepared to break transfer records, if necessary.
Gylfi Sigurdsson has told Sky Sports he is delighted to have joined former club Swansea from Tottenham.
Diego Costa has promised he will fight to make sure Chelsea win trophies this season.
Southampton are preparing to make another offer for Celtic goalkeeper Fraser Forster, according to Sky sources.