The defender was named as the new Arsenal captain on Saturday.
Nottingham Forest lost against Brighton & Hove Albion in the Championship on Friday evening.
The Belgian has fond memories of the Stadium of Light.
The 32-year-old departed Tondela this summer.
Talks over a new deal have reportedly reached a stalemate between the playmaker and the Premier League side.
The Dutchman is reportedly on the verge of sealing a move to Parkhead.
The player was linked with an exit from Newcastle United this summer.
The Dutchman is keen to see the Everton star flourish after a disappointing summer.
BBC pundits, presenters and commentators have predicted where the think who will finish top in May and finish in the top four - but who will get the closest?
Toumani Diagouraga featured for Leeds United against Queens Park Rangers last weekend, but could he be dropped against Birmingham City?
Chelsea were 1-0 winners over Liverpool in their pre-season International Champions Cup clash.
Credit Suisse, the Swiss bank which is in the middle of major restructuring, reported a surprise profit for the second quarter of 2016 on Thursday.
France's biggest bank, BNP Paribas, posted better-than-expected second-quarter profit on Thursday, even as its retail bank struggled.