Manchester United could in theory be reinstated to the Champions League after Fifa threatened to suspend Switzerland over the case involving Sion.
The Swiss FA has been given a deadline of 13 January to follow Fifa's instructions on the registration ban imposed on Sion or face a suspension which would also result in Basel being expelled from the Champions League. That could potentially see Sir Alex Ferguson's side back in the competition while another option could be that Bayern Munich, Basel's last-16 opponents, are given a bye.
