They did same thing before, when wasted total over 45 million to sign andy carrol permanently. It's not impossible for them to did it again now to sign James Rodriguez but since he bought by real madrid for 100 million, the 80 million price are fair. Still most people wouldn't believe it could happened.
James rodriguez has confirmed that he wont be willing to move to west ham. This guy actually got a good taste for a club as west ham wont be able to afford him a contract worth atleast 80 % of his current weekly payment or less. Besides that, he has no future in west ham , he should move to everton instead as they are interested with him as well