Jeff Paul: Who Could Debut in 2020 for the Vegas Golden Knights? Last season, five players made their NHL debuts with the Vegas Golden Knights. With a shortened camp and season ahead of them, the team will once again rely on some inexperienced players.

Hague will debut for the Wings.
Vegas will trade Hague and Marchessault to Detroit for the cap space they need and Detroit will give back Cholowski and a 3rd.
McCrimmon has a fondness for 3rd round picks for good players!

Very good read of promising players in the pipeline for the Knights. It will be interesting to see how they come along this shortened year and more likely next year getting the call up. Though as you mentioned it depends on the big clubs needs and performance and injuries to Knights that factor in.