Strange decision though, if we're trying to keep up a good bargaining position with AC Milan - unless either (a) a deal has been done for his sale or (b) he has already pissed Harry off by turning up late for training etc. and is undermining the morale of the squad
or (c) Harold simply does not want him around -he was hoping AC would have signed him by now but has found that others wait till the last minute like he does. AT does not feature in HR's plans and has not for the last 18 months at least. He's not one of Harold's 'lovely boys'. No point getting your hopes up. He is history.
Or (d) .... he has refused to go.
or (e) .... his (insert type of family member) has died and he is heading off to the funeral.
or (f) .... he managed to injure himself in 50 minutes or so of training.
