Enrique, who has signed a two-year deal with the Catalan outfit, was officially presented to the media earlier this afternoon.
It had been suggested that Messi could look to depart the Camp Nou this summer, but the Argentine has recently signed a new long-term contract at Barca.
"I'm delighted to have the best player in the world in my squad. All three parties are," he told reporters at a press conference.
Enrique has replaced Gerardo Martino at the helm.