Hibernian are considering offers in the region of £1.1m plus add-ons from Millwall for 25-year-old Scotland striker Kevin Nisbet.
But Ryan Porteous' potential move to Watford may be on hold until the full extent of the injury to fellow centre-half Rocky Bushiri is established.
Nisbet has scored seven goals in the seven appearances since making his return from surgery on a knee injury.
The terms of the move to Millwall would be life changing for the Glaswegian.
Nisbet joined the Easter Road club from Dunfermline Athletic for a fee of £250,000 in July 2021 having scored 23 goals in 32 appearances for the Fife club.