It was announced last week that the experienced Arsenal pair had agreed to extend their stays in north London.
Wenger was delighted with the news and believes it will only add to the unity in his first-team squad.
“I’m very happy because first of all, they are two exceptional players, and as well because I think the cohesion inside the club is an underestimated quality,” the manager told Arsenal Player.
“To have a good cohesion level, it’s important that your players stay together for a long period. That will contribute.”
“You see how people chant Santi’s name,” Wemger added. “Santi is technically perfect, he’s a very intelligent player and a very good team player as well.
“Theo is a good goalscorer and he makes very intelligent runs. I think he’s at a moment of his career where he knows that it’s now time for him to completely fulfil his potential.”Copyright 2016 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source