Celtic boss Ronny Deila has insisted that the Scottish champions are not under pressure to sell their best players.

Centre-back Virgil van Dijk in particular has been strongly linked with a move away from Parkhead.

Arsenal are said to be preparing a move, but Deila has said that there will be no major departures in the January transfer window.

"We know that we don't have to sell anybody," Deila told reporters.

"That's good for me and for the club. We want to keep our best players and that is what we are going to do."

A number of European clubs are said to be monitoring developments.