The Celtic boss admits buying will come second this January.
Celtic boss Ronny Deila admits keeping his side's best players is his 'first priority' this January.
The SPL champions are only four points ahead of second-placed Dundee United and face a tough Europa League last-32 tie against Inter Milan.
But Deila says keeping Celtic's stars is his 'first priority' - buying comes second.
“To keep is more important than to get in,” the Celtic boss told reporters, as quoted by the Scotsman.
“Consistency is everything. If you lose your best players you have to start all over again with new relations. So to keep is my first priority and then to get players in who can make the squad better.
“We know that we don’t have to sell anybody and that is a good feeling for me and the club. We want to keep our best players.
“If we can get players in early then we will do it. But it is going to be hard to get it arranged so quickly.
“The January window is more difficult than in the summer because the players you want are playing in teams who are fighting to reach their goals."