Everton have Kevin Mirallas, James McCarthy, Darron Gibson and Sylvain Distin added to the squad for the game at Crystal Palace on Saturday.
Roberto Martinez has to pick 2 from 3 - McCarthy, Barry and Besic in the midfield.
A dilemma says the manager.
Roberto said: "I hope I have that dilemma.
"That is what you want as a manager, you want to have players enjoying their football and in good moments of form and Mo Besic is a footballer that is in a good moment.
"I said it, the day he joined the club, he has the character to be an Everton great and when I see his performances it gives you a smile.
"He is always fully committed, he is a great tackler and is someone that enjoys winning the ball back.
"He has terrific energy, tactically he is developing all the time and technically he is a player you can see how good he is getting in every game he is playing and he is only 22.
"He has very impressive international experience already so, yes, you want those problems but when you have good players you can always fit them into a line-up.
"So that wouldn't be my concern, my concern is to have players who are fully fit and to make sure James McCarthy does not get rushed into action when he is not ready.
"It is a good dilemma to have.
"They have all played together in a few games and Mo and James McCarthy understand each other very well and Gareth Barry always has that old head and experienced head to make partnerships work around him.
"James McCarthy is 24, Mo Besic is 22, they have their best years ahead but step-by-step I would love to have those sort of dilemmas because players are doing well and competing for places.
"James McCarthy has always been an important player since he arrived at the club.
"He came on against Chelsea in what was an important victory for us and then in the second-half against West Ham and from that point on he became a real reliable performer.
"Once you have a player of that influence missing for that long length you are going to find it tough but in the same way, injuries happen, they are part of the game and it is up to the team to be able to cope with that and making sure when we get James back we allow him to find his feet and we allow him to compete for his place and make it a natural introduction into the side.
"We value James McCarthy immensely and every fan does too."
Everton squad: Robles, Coleman, Stones, Jagielka, Baines, Besic, Barry, Naismith, Barkley, Mirallas, Lukaku, McCarthy, Gibson, Griffiths, Garbutt, Oviedo, Browning, Hibbert, Distin, Alcaraz, Kone.
Ernie's Starting XI: Robles, Coleman, Stones, Jagielka, Baines, McCarthy, Barry, Naismith, Barkley, Mirallas, Lukaku.
What team Would You Start With? Comment Below.