The former Preston and West Brom midfielder, 30, has been looking after the younger members of the team and sees the arrival of David Healy and John Oster as a double rescue act.
Gregan said: "They’ve given me a licence to concentrate on my own game. Maybe if they’d been at Elland Road earlier it might have got the fans off my back a little."
Meanwhile, Sheffield United are poised with a £1m New Year bid for Southampton striker Brett Ormerod, who was on loan at Elland Road recently.