Paul Lambert has been instilled as one of the favourites to take over at Celtic.
Sheffield Wednesday midfielder Barry Bannan has enjoyed a great debut campaign for the club.
The Reds may have to pay up to £8million to Burnley for the forward.
Newcastle United are currently in 19th place in the Premier League table.
The former Premier League striker would welcome the Owls back to England's top flight.
The former Villa boss announced on Thursday he would be stepping down as Rovers boss at the end of the season.
Hull City winger Robert Snodgrass is still fondly remembered at Leeds United.
Villarreal beat Liverpool 1-0 in the first leg of their Europa League semi-final tie at El Madrigal.
The Reds are 1-0 down after a late goal in the first leg on Thursday evening.
HITC Sport understands that England midfielder has concerns about club's direction.