Ronald de Boer rates former Rangers teammate and current Ibrox star Kenny Miller highly.
Sunderland have had success from the French market over the past six months.
The former Liverpool manager was confirmed as Ronny Deila's replacement on Friday.
Paul Ince has also been chatting about the Tottenham Hotspur star.
The Burnley midfielder has spoken to Rangers about a potential move.
Michail Antonio is reportedly in line for a new contract at West Ham.
The Dutchman spent last season on loan at the Eredivisie club.
The Northern Irishman was appointed by the Scottish Premiership side on Friday.
Ibrox side Rangers are interested in signing Burnley midfielder Joey Barton in the summer transfer window.
Southampton boss Ronald Koeman has been linked with the Everton managerial job.