All four players were part of the squad in the 3-0 FA Cup third round win over Exeter City on Wednesday night and Klopp is detriment to keep the quartet who have all spent time on loan this season.
Following the game, Klopp revealed how he intends to monitor the progress of youth players under his nose at Anfield: "By working with them.
"It doesn't mean they play because we cannot bring them in every week in the Premier League. We need to have all of our best players here at Liverpool FC – Kent was on loan, Ojo was on loan, Tiago [Ilori] was on loan, Stewart was on loan and a few more.
"We need to keep them here and then work with them.
"Football isn't just about individual development. Yes, you have to develop individually but you have to develop as a team, you have to learn your position and you have to show you can work together with the team.
"You have to show you know about your job and the things you have to do. We will keep them here, work with them and I am sure the way will be shorter for them – but that's for the future, not now."