David Wagner is excited by the prospect of facing former mentor Jurgen Klopp after helping Huddersfield Town secure promotion to the Premier League.
The Terriers recorded a penalty shootout victory over Reading in the Championship playoff final at Wembley, meaning Wagner will come up against Liverpool in next season's top flight.
Wagner was Borussia Dortmund II manager when Klopp was in charge of the BVB first team, and revealed that after promotion he is likely to be talking to his former colleague about the prospect of keeping Reds loanee Danny Ward at the Kirklees Stadium.
"I think I have a lot of calls to do to be fair," Wagner told reporters after the victory.
"Maybe this is why I don't like to get my head around it because I know how much work is in front of me. Of course I would like to have all of my players with me next season. If it is possible, we will see.
“I will speak with Jurgen for sure as well, not only about Danny but about what has happened.
“I will meet Jurgen on the sideline in the Premier League; it will be funny – when the game starts we are sometimes out of control – but we will see.”
Mooy scored four times in 45 league appearances for Huddersfield, having moved into central midfield under Wagner's guidance.
"He was an outstanding player before this season. Aaron is the heart of our game. He's able to decelerate when necessary or accelerate the game if you need it," Wagner admitted.
"He's so confident and calm on the ball. He's developed his fighting attitude since he arrived, because he arrived as a number 10 and usually number 10s are not the best fighters.
"Since he's played a bit deeper, he has a great fighting attitude. He is one of many outstanding players we had this season and we are very happy that he was with us. Maybe this is a further phone call I have to do.