The Whites sold their two best players - Raphinha and Kalvin Phillips - this summer but the American is happy the way the money has be reinvested has left him with a deeper pool of players.
Listing the absentees for Saturday's game at home to Wolverhampton Wanderers, he said: "Dan James is suspended for one more match.
"He will be playing 90 minutes tomorrow (Friday) night in the (under-)21s match by his request.
"Liam Cooper has had an Achilles issue from his off-season programme running on a trreadmill and it's taken him a long time to get back. This week he's been on the pitch doing individual work - finally. He will not be available this weekend but we're hoping by next week he will be in team training.
"Junior Firpo had a scan today and is ahead of scheduled so we can be more aggressive with him but I would say he's probably two or three weeks away from being match eligible.
"Adam Forshaw has made really good progress from a with a little bit of a knee MCL issue - not a pure MCL strain. We're hopeful he will be training next week.
"Luke Ayling is ahead of schedule after his surgery. We're trying not to pressure him too much.
"He's been on the pitch and wer'e hopeful he can be training in a couple of weeks.
"Luis (Sinisterra) was on the pitch today and is getting closer and closer to his top speed so I would assume he will be back next week and hopefully available for the weekend after.
"Stuart Dallas is making really good progress and has a couple of check-ups. They feel he's right on track."
Leeds squad was too thin last season and it saw them dragged into a nervous relegation battle but they seem to have learnt the lessons.
"We know we lost two great players but that has allowed us to bring in six, seven, eight other players than can help us even more precisely play the version of football we want to play," he explained.
"It was great working with Kalvin and Raphinha but we'll use the sitution to make us stronger."