Leeds United signed Rob Green from Queens Park Rangers earlier this summer.
Green was signed from Queens Park Rangers earlier this summer, and he is expected to be installed as the Whites’ number one next season.
However, the 36-year-old was not included in Monk’s starting line-up for his side’s first friendly match of the season, which they won 2-1 against Shelbourne.
And Monk said: “I have a plan for every player in terms of pre-season – physically and things like that.
“Rob joined us a little bit later than the others and I just felt that he needed another week’s training to hopefully be ready for the game at the weekend.”
In Green’s absence, Leeds gave game-time to both Ross Turnbull and Bailey Peacock-Farrell during the friendly.
It was notable that Leeds did not include Marco Silvestri in their team, with the Italian banished to train with the under-21’s.
Leeds are expected to sell Silvestri this summer, with Green likely to take the former Chievo man’s place in the starting line-up.
Leeds’ next friendly fixture comes against Shamrock Rovers on Saturday.