Relegation-threatened Livorno have sacked Domenico Di Carlo after just 88 days in charge and re-appointed Davide Nicola.
Virgil van Dijk claims he knows nothing of interest from English clubs and is keen to prove himself in the Champions League with Celtic.
Crystal Palace have signed French defender Florian Marange on a free transfer from Bordeaux.
The 27-year-old has signed a one-year deal.
Marange joins Stephen Dobbie, Dwight Gayle, Jerome Thomas, Jose Campana, Kevin Phillips, Elliot Grandin and Marouane Chamakh in moving to Selhurst Park this summer as Ian Holloway's men mount a first top-flight campaign in eight years.