Arteta has been appointed global ambassador and direct of performance at Under Armour.
The 43 year-old said: "The collaboration with Under Armour is the perfect opportunity for me to work with a partner committed to making young athletes better.
"I'm passionate about providing a platform for the next generation of players coming through in football and the top level of talent already signed with the brand show that they are too.
"We share the same mentality in always striving for more by finding new ways to innovate and disrupt the game at the top level. Our values in pursuing greatness are closely aligned and together, I'm confident we're going to achieve great things in football."
