Arteta was speaking at the National stadium in Singapore ahead of the first game of their Asian tour.
Asked about Riccardo Calafiori, he said: "It's a big season for him. He looks very, very excited. We know that one of the biggest things we have to achieve this season is availability. It's true that the main two injuries that he had were on international duty while he was playing with Italy. But these things can happen.
"Now we want a player that is consistently available and performing at the level that he can do. Because he brings an energy and predictability to the team that we really are going to need. He was certainly missed for a big part of last season. Hopefully that second season with more understanding and a little bit more luck, which I think he will miss as well, we can see a great version of him."
On fellow defender Gabriel Magalhaes, who also struggled with injury last term, Arteta said: "We haven't seen them for six weeks and they come back older, more mature. Gabby with his new contract he showed his commitment to the club and to grow in his role. I am very pleased. He played 45 minutes against Watford. He looks in good shape. We have missed a lot of players at the end of the season but they all look to be in the right direction and contributing on the tour."