Dons to part ways with Doumbe
Watford have flown to Marbella for some warm-weather training ahead of the Championship play-off final.
Gianfranco Zola has taken his squad to southern Spain for four days, returning to England on Monday, ahead of their Wembley showdown with
Crystal Palace a week later for a place in the Premier League.
"This trip abroad gives us the opportunity to train and to enjoy each other's company," Zola told the club's official website.
"It has been a long season, plus we've had two hard play-off games so far, so we can get some training in and relax in nice surroundings at the same time.
"Our trip will help us prepare for next week where we'll increase our training intensity."
Chairman Brian Fenton revealed last month that the Shakers, relegated from League One at the end of the season, will go out of business unless they receive a cash injection of ?1million.
And a statement from the club on Thursday claimed they are close to completing negotiations with investors and hope to have some "good news" to report soon.
"The board of directors at Bury FC can confirm that negotiations are ongoing and are approaching completion," read the statement.
"The board would further like to thank supporters for their patience and understanding whilst these talks continue.
"Under the terms of these discussions, we have been unable to make further comment, but as discussions approach the final stages we hope to be able to reveal good news for everyone involved with Bury Football Club in the very near future."
However, the club have triggered the one-year options on the deals of fellow defenders Jon Otsemobor and Gary MacKenzie.
Doumbe, who joined the Dons from Plymouth in August 2009, will become a free agent when his contract expires next month.
The 33-year-old Frenchman made 141 appearances, including 28 this season, for the club and scored 11 goals. He was also part of two play-off campaigns under current Dons manager Karl Robinson.
"Mathias has been an excellent servant to this football club and has proven to be a tremendous professional," said Robinson. "He is a strong character who has played a large part in our recent history and it was a hard decision to release him this year.
"However, with the Financial Fair Play regulations becoming even stricter this season we have to be prudent with our recruitment policy and along the way we will have to make tough decisions.
"I would like to thank Mathias for all of his work and dedication to the club over the past few years and wish him the best of luck in the future. He is someone I class as a friend of mine and he will always be a friend of the football club's."
Meanwhile, Otsemobor and MacKenzie are now contracted to the club until June 2014.
Captain Dean Lewington, fellow full-back Adam Chicksen and goalkeeper Ian McLoughlin have been offered new deals but the trio have yet to put pen to paper.