Stengs natural position is right winger altough he last year he played mostly as an CM/AM and this year only as an AM. I think his natural position should be CAM now.
https://www.transfermarkt.nl/calvin-stengs/leistungsdaten/spieler/409344/plus/0?saison=2022
And for Lingr, in my game he has a contract until 2024 however he extended untill 2025 at Slavia to make the loan work. Also it is not just a loan it is a accounting trick to not pay the full sum at once. He wil get a definitive transfer to Feyenoord in 2024, or at least an option to buy.
https://www.feyenoord.nl/nieuws/nieuwsoverzicht/ondrej-lingr-nieuwe-versterking-voor-feyenoord-240823