Mr Donoghue said further investigations into Huckerby's telephone records pointed to an address in Manchester which was known to have links with a convicted armed robber.
Mikel Jon Obi, Arjen Robben and Wright-Phillips were struggling to get in the game and Norwich, with Etuhu and Darren Huckerby to the fore, were posing problems.
"I sit and listen to Adam Drury and Darren Huckerby talk about the success they've had, It's been disappointing that since I've come in we've not achieved anything, " he said.
Included in the get-together from 16-18 August are youngsters Emile Heskey of Leicester and Coventry's Darren Huckerby who have a chance to impress before England's first qualifying game against Sweden next month.
The undercover operation was designed to see if one of Huckerby's friends would plan a similar robbery with a Securicor driver as an ''inside man'' and James Power, was said to have taken the "bait" in secretly taped conversations.