I believe you're right mate, but I have to disagree with the bold bit.
He was under contract with us for another season, a contract he'd been all too happy to sign when he wasn't sure he'd get a better offer. The club should absolutely not have felt obligated to let him leave. Personally I just don't get the idea that Lukaku, Stones etc who have left to better themselves and in turn earned the club enormous amounts of money are snakes who should be hounded, but someone who buggered off for free and left us in the lurch at the first opportunity is a model pro who we should all admire and thank for honouring us with his presence.
Klaassen is still not winning me over, and I have yet to see anything whatsoever to suggest he was worth anything like what we've paid for him. There's still time for obviously, but it would be nice just to see hints of some promise rather than the listless performances he's produced thus far.