Everton are reportedly interested in signing Manchester United winger Memphis Depay.
Dick Advocaat thinks Sunderland could benefit from relegation, citing Newcastle United as a template.
Sunderland have had a familiar start to this season under different management but are the numbers similar?
Advocaat spent three-and-a-half years at Ibrox.
The Dutchman is said to be eager to recruit the Sunderland midfielder for the second time in just over 12 months.
The Italian international wants a move to Bologna.
Sunderland secured their Premier League survival with a win over Everton on Wednesday.
He endured a controversial time at Rangers, but Lorenzo Amoruso turned things around to win the treble at Ibrox before his departure.
He was last seen at Rangers as a manager, but during his playing days, Stuart McCall played a major part in the club's dominance during the nineties.
Sunderland are currently four points adrift of safety.