you do understand that using ie or eg generally means giving a rough example or showing a case of the idea you've just stated right, I absolutely was plucking numbers out of the air but by using ie or eg it was entirely clear to anyone who knows english that I wasn't claiming those as accurate numbers(though the numbers are likely to be in the right ballpark for both). There is very little reason for a player to sign a long contract extension unless they are getting a pay rise, if UTD were offering him 60k a week he'd likely just leave and try and get a better deal elsewhere and also more games.
A bit part player at Utd WILL, categorically, make more than a first team key player at Sporting.
The bit about Hernandez, I was simply saying he was better than you were implying with "he hasn't lit the place up", he's been very good when used. I never suggested he wouldn't be an asset, I was basically saying he is likely a bigger asset than you appeared to think he was.
Again you're reading the wrong intention with what I said with regards to Mata, papers imply people want players all the time, it's rubbish. Mata is a player who none of the big teams in Spain(teams who saw him play weekly) wanted, he's not seen as good for Spain, he went to Chelsea and was shoved out the door for not being good enough, he looks like he might get shoved out of the door at Utd for not being good enough.
Why would Valencia or Juve want to buy a player who has failed at the top level for more than they can buy and pay other better players? He's weak, not physical enough, lazy, very poor defensively and only sporadically good offensively. Outside of a good freekick there isn't much too his game. He's a £100k a week 10-15mil player for backup at a top club or first team at a lower club. He has a cushy contract and we see much much more often than not that a player will milk a huge contract rather than leave for first team football. These days it's easy enough to simply go out on loan, have the same wage as normal and see out your contract rather than leave.
90% of players in Mata's situation are either being paid to leave, or see out their contracts either barely playing or on loan, either way they get their money.