Chelsea target Paulo Dybala’s future will be decided within the next two weeks, says Palermo chief Maurizio Zamparini.
Cardiff will allow long-serving Kevin McNaughton to leave this summer along with Danny Gabbidon and Nicky Maynard.
The 21-year-old Israel international joins up at Parkhead with fellow countryman Beram Kayal.
Biton, a defensive midfielder, will go into Neil Lennon's squad for the Champions League group stage campaign against Barcelona, AC Milan and Ajax.
He is Lennon's fifth summer signing following the recruitment of Amido Balde, Derk Boerrigter, Steven Mouyokolo and Virgil van Dijk.
Biton is an ex-team mate of Celtic defender Efe Ambrose, with whom he will hope to join up with for the Scottish Premiership clash with Dundee United at Tannadice on Saturday.
The Hoops' latest recruit will speak to the media at a press conference at Lennoxtown later today.