TeamTALK claims Wolves are set to challenge Southampton and West Ham United for Mulligan.
The 23-year-old recorded three goals and five assists in 33 appearances last season. The report says initial enquiries have been made. Hibernian are in a strong position, with three years remaining on his contract.
AS reports Aston Villa are interested in signing Nick Woltemade and could meet an asking price in the region of £56.4 million.
The report adds Atletico Madrid and Borussia Dortmund are monitoring after a difficult debut Premier League campaign. The Germany international, currently at the World Cup, joined Newcastle from VfB Stuttgart for £69 million last summer and has eight goals and three assists in 33 league games.