HITC Sport takes a look at three players from the Dutch Eredivisie which Celtic could pursue this summer.
The Dutch maestro spent three years in North London under Arsene Wenger between 1997 and 2000.
Ex-Liverpool midfielder Ryan Babel has hit out at former club Liverpool, claiming he was coached badly.
The former Ajax star caught the eye for Boro against West Ham on Saturday.
The Toffees remain keen on Ajax goalkeeper Jasper Cillessen despite sacking Roberto Martinez last month, a report claims.
They face competition from AC Milan for his services.
Everton and Southampton are all also said to be tracking highly-rated attacking midfielder Abdelhak Nouri.
Ronny Deila has plans for Celtic's transfer policy - and he aims to emulate Ajax.
Former Manchester United star Jaap Stam is eyeing a return to the Premier League and Sunderland could be the perfect place for him to prove himself.
Newcastle United should make a move for Lasse Schone when his contract expires this summer.