Well its happened, and its a pathetic piece of business for us to be honest. Why on earth didn't we sell him properly then before the window closed, instead of doing this 'loan with a view to a permanant deal' thing ?.
Apparently its the most Millwall have ever paid for somebody (when the full amount is eventually paid), but not surprisingly the amount and the length of the eventual signed contract are both undisclosed!.

https://www.bbc.co.uk/sport/football/45282975