Lee Gregory is out of contract in the summer but the Millwall striker does not appear to be on Celtic's radar any longer.
Celtic enquired about the availability of Millwall frontman Lee Gregory last summer and he could be a welcome addition at Parkhead.
Millwall's fleet-footed frontman Lee Gregory was linked to QPR last summer - and they should try again with Everton's Aroune Kone set to move elsewhere.
Sheffield United reportedly want Millwall goal-machine Lee Gregory - but he will surely appeal to the bargain-hunting Gary Rowett at Derby County.
Wolves boss Paul Lambert loves a lower league signing.
The Millwall striker is reportedly the subject of a £2m offer from Sheffield United, but should Sheffield Wednesday make a move?
Gregory's teammate Jed Wallace is on loan at The Den from Wolverhampton Wanderers.
The goal-getting striker is however a Sheffield United fan.
The former Queens Park Rangers target has been among the goals against this season.
Mark Warburton is looking to add a striker to Ibrox ranks. Gregory would be perfect for Rangers.