As Pep Guardiola assesses his options for next season, Celina will return to Manchester in summer with a solid season of competitive football under his belt in a team that values possession.
"It's a really big opportunity playing in a big stadium like this in a very competitive league with good players," he told City TV.
"They're all really nice people. We all get on well, we really get on together and have a lot of fun but everyone is serious about the football and wants to win. It's very competitive.
"We play possession based football and we have a very young squad with really talented players. We try to play nice football.
"We normally play 4-2-3-1 . I play as a No.10 in front of the two midfielders behind the striker. I really enjoy playing that position and think that's the position I'm best at.
"I've learned that I can manage playing first team football in front of a big crowd. That's something I knew I could handle. It's good to come here and show everyone that I can."