Not read the link but I think, because of the unbelievably good deal they got for being tenants in the taxpayers athletics bowl, one stipulation was if they sell within one year they paid a small percentage of an profit to LDC (or whatever they are called who run the stadium)
Two years evens less etc, then when (I think,) it gets to 5 years, they pay nothing back out of the 100's of millions earned so I think they will probably wait until then and walk away with 100's of millions in profit.
Before the move, West Ham supporters were told (suckered in,) that they will be buying better players just because of the move and the extra money coming in, better players who will quickly have them playing in Europe but all they have really got is a new badge (now with London on it to help people around the world know where they are from) been kicked out of the stadium they loved, from an area they loved and then had the displeasure of seeing Upton Park being blown up in a James Bond film.
They are now in area of generic empty high rises, with a station inside Westfields that doesn't want supporters in there, hardly any pubs anywhere near the stadium, a long stop and go 20+ minute walk back to the station after the game, walk to station after watching football in hell whole of a mecano stadium that has supporters miles from the pitch, a £240 million roof that doesn't cover all the seats, stands that are made of scaffold and (I think) in every season since the move, a relegation battle.
Most of th fans were totally sucked in with the owners lies but a lot more now realise that the West Ham they loved has now gone and that they were truly flicked up the Arsenal.
When I don't come across West Ham supporters I honestly feel sorry for them but when I do come across them that feeling very often disappears and I enjoy listening to their misery.