Arsenal skipper Mikel Arteta is delighted with the early impression of new teammate Calum Chambers.
Chambers joined in a £16million deal from Southampton earlier in the summer and the 19-year-old has produced some consistent displays during pre-season.
Arteta is confident there is more to come.
"I am impressed by Calum's character, by how quickly he is adapting and how secure he is when he plays," said the Spaniard.
"He is mature, a normal guy and I think he is going to be a very important player for us in the next few years."
