Rotherham close in on Blackpool's Clark Robertson

The Gazette understands the 24-year-old, whose contract at Blackpool expires at the end of the month, could seal a deal with the Millers as soon as the end of this week.

The centre-back has also held talks with Sunderland but it is understood Robertson would prefer to step up to the Championship.

Another Championship club are said to be in the frame, though Rotherham are favourites.

Speaking to The Gazette last month, Robertson hinted he saw his future in the Championship as that is the most likely route to a Scotland call-up.

He said: “I am definitely keen to play at a higher level and I think my performances have shown I can do that. My ambition is to get into the Championship, so we will see what happens.

“I don’t know if the Scotland manager will be looking at me at Blackpool. With the way the club is just now, maybe I do need to be playing at a higher level with a bigger club.

“I want to kick on next season regardless of where I am but it is one of my ambitions to get in the Scotland squad.”

Robertson’s departure wouldn’t come as a huge surprise but would still be a major blow for Pool boss Gary Bowyer, given his impressive performances in three seasons as the club.

The defender played a leading role in Pool’s promotion from League Two, partnering Tom Aldred. Last season he struck up an even more impressive partnership with Curtis Tilt, earning the club’s player of the season award.

Pool could be dealt a double blow if Tilt also departs. Ipswich Town are said to have tabled a bid for his services, while Reading, Queens Park Rangers and Portsmouth are also thought to be interested.