Derby will assess goalkeeper Lee Grant's fitness before deciding whether or not to further extend Jack Butland's loan.
Celtic claim a fee was agreed with Manchester City for John Guidetti prior to them taking the striker on loan.
Valencia have confirmed the appointment of Ernesto Valverde as their new coach on a deal until the end of the season.
Valverde succeeds Mauricio Pellegrino, who was sacked just hours after the club's 5-2 defeat at home to Real Sociedad on Saturday.
Valverde, 48, has previously coached Athletic Bilbao, Espanyol and Villarreal in Spain as well as two spells with Greek club Olympiacos.