interim boss provided a positive injury update on a crop of players ahead of their clash against - revealing it won't be long before and Leny Yoro return to action after resuming training.
United have been without the defensive duo for the entire season, with Shaw suffering a number of set-backs in his recovery from a calf injury while Yoro required surgery following a issue with his foot.
But Van Nistelrooy was happy to gave some good news on their progress - which will be well received by incoming boss as he looks to make an immediate impact at Old Trafford.
The Dutchman led United to a 2-0 win over PAOK in the on Thursday night, which also saw coming on for the final 10 minutes of the game - his first taste of action since September after a hamstring blow.
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He was optimistic United were slowly returning to full strength as Manuel Ugarte and Christian Eriksen also picked up vital minutes in the game.
Van Nistelrooy said: "Yesterday we had a lot of benefit from Christian playing 30 mins with Ugarte and Mason making his first minutes again, so glad they are back and for a little bit of a longer future that Luke and Leny are on the pitch."
Amad Diallo, meanwhile - who scored in the win over the Greek side - is on course to be fit to faces the Foxes despite being forced off around ten minutes from the end of the game. The interim coach also said was in a good position to return Amorim after the international break.
"Amad was assessed, still working on him to get him ready for Sunday, so hopefully it will work and Kobbie is also progressing with his injury. He isn't yet with the team, though. He needs more time."
This will be Van Nistelrooy's final game in charge after guiding the club to two wins and one draw in all competitions - one of which came against this weekend's opponents Leicester in the Carabao Cup.
When asked for his feelings ahead of his last game in charge, he said: "I don't know if it will be emotional, I'm pragmatic as well, although proud to fulfil this. We'll see how I feel on Sunday and other than that, there's not much news. Ruben and I are focusing on our teams and on our games."
Amorim's first game in charge will be Ipswich away on November 24 before tests against Bodo/Glimt, and .
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