It really, honestly doesn’t send any such message. It’s basic economics mate - supply and demand. If the lad had a few clubs after him or he was a TOP priority for PSG then we’d have the leverage we need to make demands about the terms of the deal.
As it is, at this stage anyway, there is one club in for him and they’re signing free transfers all over the show because they’re limited in what they can spend after their spending in recent years.
If we were to take the stand you suggest for the sake of it, we guarantee (barring the emergence of a late suitor) Kean staying with us next season. At the risk of repeating myself for the millionth time, that can only be seen as a good thing if he does enough on the pitch to justify a year’s worth of salary and the opportunity cost of the loan fee. Granted, the level of output required is subjective but I’d start the bidding at about 15 combined goals/assists. Likely, do you think?