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.
Hearts have confirmed winger Andrew Driver has left the club to join MLS side Houston Dynamo.
Driver, who becomes the latest first-team player to leave Tynecastle, will join the Dynamo on loan until his Hearts deal expires in the summer.
A statement on the club website read: "The club wishes Andrew all the best as he continues his career with this fantastic opportunity to play in America."