The Manchester United boss gave his verdict on the uncertain futures of Donny van de Beek and Timothy Fosu-Mensah.
Liverpool defender Virgil van Dijk should be available for the delayed European Championship in June, says Netherlands boss Frank de Boer.
England meet Poland, France face Ukraine, and Spain will tackle Sweden in qualifying for the 2022 World Cup in Qatar.
Virgil van Dijk could miss the rest of the season for Liverpool, but Clarence Seedorf thinks his competitive nature can be replicated.
Although Georginio Wijnaldum felt the Netherlands' display in Poland was one of their best under Ronald de Boer, he believes work is needed.
Two goals in the space of seven minutes from Memphis Depay and Georginio Wijnaldum saw the Netherlands come from behind to defeat Poland.
A first win as coach of the Netherlands was satisfying for Frank de Boer.
The Netherlands could still qualify for the Nations League Finals after beating Bosnia-Herzegovina in Amsterdam on Sunday.
Barcelona have been strongly linked with Memphis Depay and the Dutchman seems to be encouraging speculation.
Donny van de Beek spoke about his start to life at Manchester United following the Netherlands' draw with Spain on Wednesday.