The Ivory Coast international is in talks with the Gunners about a summer move and Sagna has backed the proposed move saying it would be great to have such a 'gifted' player at the Emirates.
"I've heard about him. He's a gifted player," he told RMC Radio.
"This season, he was a key player for Lille, and really help his team to be champion.
"He's got a wonderful technique on a football field, and I'm sure he would be welcome."