The France international has paid a tearful tribute to former club Marseille following eight years at Stade Velodrome
The France international has joined the Russian Premier League outfit for a fee in the region of €7 million, with many supporters in his home country surprised that the 29-year-old did not wait for the chance to join a more established European powerhouse.
Valbuena, however, insists he has made the right decision over his future and, though he admits to being frustrated at last season, he bade a tearful farewell to the Stade Velodrome side.
"There is a lot of emotion," Valbuena said in a press conference screened on the club's website. "I promised myself not to cry but I spent eight years here, I experienced fantastic things, titles, league cups.
"I'm proud of that, but the page turns today.
"I did so much here and everything OM has given me has been positive. All of my coaches have mattered to me but I don't forget Jose Anigo and Pape Diouf who trusted in me when I was coming from a small club. My greatest pride is to have succeeded here.
"Last year with OM was a little complicated. It was not really bad but it was not what I expected. It was time to move on.
"Dynamo showed a lot of interest in me. The coach [Stanislav Cherchesov] wanted me since 2008 when I played against Spartak Moscow.
"I liked what he had to say. And the club has a real project. They want to win everything. I want to help them progress."
Valbuena lifted one Ligue 1 title, three Coupes de la Ligue and two Trophees des Champions during his career with Marseille.