It could take the Admiral into retirement age with him being 32 now and the signing comes just one day after Steve Kean signed a deal that will keep him at the club until 2013.
Only a few weeks ago Nelsen was speaking out about the unfair sacking of Sam Allardyce but having got that out of his system, he is fully behind Kean and his new regime.
“It is a real positive that we are heading in the right direction,” Nelsen told Sky Sports News.