"Harry was determined to show what he was capable of having been injured for a year and a half. He's now proving he's a great player," said Riise.
"I love playing down the left with him and I think we've got a great partnership going. We understand each other's game a lot better.
"It was difficult for him when he was injured, but now he's fit his confidence his growing. He adds something to the team and it's great to have him back."