According to a report in the Edinburgh Evening News, both Rangers and Celtic are chasing a deal for Hearts striker Osman Sow.
The 25-year-old has netted 11 goals in the Scottish Premiership so far this season, and his form has attracted the attentions of a number of sides.
A range of English clubs are said to be interested in Sow, but Rangers and Celtic are amongst the front runners to land the powerful forward.
Rangers have already made two additions in January, but they are keen to further strengthen their squad.
The Bhoys, meanwhile, have targeted defensive signings so far this month, but Ronny Deila also wants to improve his front line.
Sow is one of the Norwegian boss’s top targets, and both Celtic and Rangers have reportedly made the player’s representatives aware of their interest.
Sow’s contract expires at the end of the season, and although Hearts are keen to increase his current wage, they realise that they face a massive fight to keep hold of him.