Birmingham City have signed Robert Tesche on loan until the end of the season, and the German is keen to get going under new boss Gary Rowett.
He took part in his first training session on Monday morning, and told Birmingham's YouTube channel he is looking forward to contributing for his new side.
Birmingham's manager told the club's official website that his performance against the club for Forest back in December helped persuade him to make the move for Tesche.
He said: "He is another player that we really like. He played very well against us recently and I think technically he’s a very, very good footballer.
"I watched some of his games when he played for Hamburg in Germany and he’s technically very sound and a very strong boy."
He went onto admit the timing of the deal worked out well for Birmingham, who have just had midfielder Stephen Gleeson suspended.
Against Birmingham, Tesche almost scored, hitting the woodwork with in a game Rowett's side won 3-1. He was one of the few Forest players to play efficiently, completing 86 per cent of his passes, and winning seven duels in midfield.
Tesche had fallen out of favour under new boss Dougie Freedman, who had told Forest's website that Birmingham are paying his wages in full during the course of the loan deal.