The Academy boss says his young players are raring to go, but knows the clash with St Johnstone at Ibrox will be a tough one.
His young side have yet to kick off in the SFL reserve league so go in to Sunday’s clash at disadvantage against the Perth outfit.
He said: “We are delighted to have some action, the only pity being that we haven’t played a competitive match so far this season.
“The SFL reserve league doesn’t start for a few weeks yet so we’re going in to the game a wee bit on the back foot, but we’re looking forward to it.
“It’s at Ibrox which is always a good education for the kids and we hope there’s a healthy turn out to support them.
“We have a hard game on Sunday and St Johnstone have already played some games in their under-20 league so it’s going to be a tough task.
“It’s an under-20 competition but we will be a very young side, predominantly under-17 and under-18 with a few under-19s.
“In some cases we’ll be giving away a couple of years but while it’s a young group, it’s a good group and we hope we can make a fist of it.”
Sinclair is hoping that the emergence of former Youth Cup stars Lewis Macleod and Barrie McKay as first team contenders can encourage his current crop of stars to continue their own progress through hard work.
He added: “There’s nothing worse than working hard on a daily basis and not seeing any light at the end of the tunnel.
“But the manager has certainly given that light and the kids are working hard to that end.
“If Barrie and Lewis can continue to keep a foothold in the first team then that sets a great path for the younger players.”
Kick off on Sunday is at 1pm at Ibrox. You can pay at the gate, £4 for adults and £1 for concessions/juveniles.