The board of the Nigeria Football Federation (NFF) appointed George as the Super Eagles’ head coach on April 19.
Mr Kroes, 49, a former director at Eredivisie clubs Go Ahead Eagles and AZ Alkmaar started his job as CEO and chairman of the board at Ajax on March 15.
The signs are ominous as they struggle to build a new team in the wake of record sales last year.
Bayern Munich have signed Dutch defender Daley Blind on a free transfer on a six-month contract, the Bundesliga club said on Thursday.
Fans in Ebonyi joined millions across the world on Monday to celebrate football maestro and former Super Eagles skipper, Kanu Nwankwo, as he turned 46.
Led by departing coach Roger Schimdt, PSV Eindhoven came from behind to beat Ajax Amsterdam 2-1 to secure the Dutch Cup title on Sunday.
