The Magpies say the switch - reported to be in the region of £40m - underlines the importance of inserting a sell-on clause in any transfer.
Back in 2018 Wolves signed Kilman from the
National League club but they maintained an interest - and negotiated that they would be entitled to a cut of any future fee the Premier League club make.
Fast forward six years and their decision has paid off and how - Maidenhead have not announced the exact sum they’ll bank but it is sure to be seven figures.
Chairman Peter Griffin is a happy man and says it will be the highest sum a club outside the EFL has ever made, eclipsing the million pounds Fleetwood banked for Jamie Vardy in 2012.
“I would like to congratulate Max Kilman on completing his transfer from Wolves to West Ham and wish him every success for this exciting next stage of his career,” Griffin said in a message on behalf of the club this morning.
“It is no great secret that when we sold Max to Wolves in 2018 a sell on clause was included within the transfer agreement which the club will now benefit from over the coming few years.
“Over recent days there has been a lot of speculation regarding the sell on clause and the amount of money the club will receive.
“As you would expect commercial confidentially prohibits me from providing specific details about the sell on clause, however, we were engaged with various parties during the negotiation process for Max’s transfer. We reached a mutually agreeable position that all parties are satisfied with and importantly it is in the best interest of the club.
“Ultimately this is a fantastic outcome for club which will benefit from one of the largest, if not the largest, transfer payments an English non league club has ever received, which is something to celebrate.
“This is testament to the hard work of Alan Devonshire and his coaching team past and present, as well our Academy programme which every year is developing players which move into our first team squad.
“This is a momentous day for Maidenhead United FC, which gives us the opportunity to profoundly change the future of the club. A supporters meeting will be held in due course to give more details on how the cash injection will be used on and off the pitch.”