Celtic boss John Collins concedes it will be difficult to keep players happy at the club and expects some of them to move on in the summer.
The Hoops landed 17-year-old midfielder Kristoffer Ajer on a four-year deal on Wednesday adding to the competition in an already congested midfield.
There are as many as 16 first-team midfielders to choose from at Celtic Park if you include Liam Henderson who is on loan at Hibernian.
Scott Allan, Ryan Christie and Patrick Roberts have recently joined the club and struggled to make an impact, while James Forrest, Charlie Mulgrew are out of contract in the summer.
Collins admits it will be hard to accommodate them all.
“We have a big squad, there is lot of competition for places and we are seeing the benefit on the training pitch, everyone is flying about desperate to prove themselves and desperate to get into the team,” he said.
“You can’t keep them completely happy. I would be telling a lie, everybody would be telling a lie if they think everybody is happy at a football club.
“You have 11 starters who are very happy, the substitutes who are a little bit unhappy, and you have ones who are sitting in the stand who aren’t happy.
“The most important thing is that the players realise, to get into the team they have to train well, stay focused and remain positive.
“It is difficult for players, when you are not playing, we understand that, they are human beings as well as footballers but you have to make sure that disappointment, they take it in the right way and stay focused.
“Come the end of the season there will be players who will move out.”
The Atlantic League has once again been mooted after European Club’s Association chairman Karl-Heinz Rummenigge suggested the idea of the top 20 European clubs from England, Germany, France, Italy and Spain breaking away to make their own league.
Collins added: “I don’t think that will happen. Clubs love derbies, love playing against their local rivals and I think that will never go away.
But I think there will always be European tournaments and everyone enjoys them but there is something special about local derbies for every club.”