Manchester United boss Erik ten Hag says he'll keep giving his young players a chance when it opens up.
Ten Hag tested several youngsters in Monday's FA Cup win at Wigan.
He said: "So you always have to consider such choices, but they were two very good loans, very successful. [Marcel] Sabitzer and Wout Weghorst contributed a lot to our success last year. When such opportunities are coming up we have to take them.
"At the same time you have to analyse what is already onboard and what is coming up. For instance, in the summer, I already counted with Alejandro Garnacho and Kobbie Mainoo - and I knew they would make mistakes - maybe we can't bring them in every game. But I counted with them, but of course that turned negative when Kobbie Mainoo got injured in the second game of the season and you lose him for three to four months.
Then it stops the process and now we have to work him back. Then also you have to accept he cannot play three games or 90 minutes in the Premier League in six days, or seven days, that is not possible. "
"You have to manage that or manage that process because you don't want him to get injured again. Then you need players who can replace his position in that moment and get the right results so that is what we tried to prepare for when we make our decision."