Southampton are set to continue placing trust in their youngsters next season.
Koeman is planning on freshening up his ranks at St Mary’s in the summer transfer window, but the Dutchman does not want to block the progress of his exciting academy graduates.
He says that he will not bring in too many players over the coming months, even if the Saints make it into Europe, with a number of under-21 players set to be promoted into the senior set-up.
"It’s always first we will look to the Under-21 players because that’s the future of the club and we have some players on loan that we have to make decisions about," he said.
"Then it’s possible that we need one or two players more to have more players, more numbers in the squad if you play European football. But first we have to win and see what happens in the summer."
Southampton's lack of squad depth has been exposed this season, with their form tailing off as the campaign has progressed, so Koeman will be determined to add more quality over the summer.
Although he has the core of a good squad, a slight injection of class is likely to be needed if they are to continue challenging for the European spots.
Saints youngsters will be buoyed by Koeman's words, though, as they suggest that more chances could come their way next season.
The likes of Sam Gallagher, Lloyd Isgrove and Jake Hesketh will all be hoping to see regular action next term, and Koeman's comments hint that their wish may be granted.