Norwich full-back Dimitris Giannoulis has backed fellow Greece international Christos Tzolis to make an impact after his return to Carrow Road.
But he was recalled by the Canaries last month and put straight into the squad by new head coach David Wagner.
"He's a good friend of mine. I'm really happy for him and he will help the team get promoted," Giannoulis said.
"It's a big chance for him. He's been great in training."
Tzolis was a second-half substitute in Saturday's 3-0 home defeat by Championship leaders Burnley - his first appearance for the Canaries since April last year.