Wilshere, 20, is back in full training with the Gunners after missing 14 months with ankle problems.
"It's nice to see him back," forward Walcott said in The Sun. "He's the sort of player that's just different.
"He spots things that no one else does and he hasn't lost it, trust me.
"He's buzzing, he's getting stuck in and that's what he wants."