He thinks the next campaign, with a pre-season under his belt, will showcase his true talent.
Holtby told the Daily Mail: "I came in without any pre-season, the team was on a fluent run, so I knew that’s it was going to be difficult because it’s a very strong side. I wanted to adapt as quick as possible.
"Normally I would sign for summer, I think that’s what everybody expected. But I wanted to adapt as quick as possible. These few months that I’ve got now, they are very important for me to settle in in England, to know the players, to get into the game.
"Then from summer on I think it’s going to be a different challenge, because we start pre-season and everybody starts by zero, so I think it’s different.
"In my opinion my best position is as one of the holding midfielders, or maybe in a 4-3-3 formation as one of the central midfielders. This is where I feel most comfortable and where I can put my best effort in."