I'm an Ole fan so this comment is based solely on this match - I thought some poor decisions were made as regards subs and tactics.
We went way too defensive way too soon and lacked shape and completely nullified our attacking threat. And I was amazed Greenwood never got utilised as one of the 5 subs with his pace and individual trickery on the break.
When AWB was sent off, I was hoping we'd just bring Varane on for Sancho and move Lindelof to RB and stick with a back four and two in front - Fred and either DVB or Matic. And leave Pogba, Ronaldo and Fernandes to offer attacking threat, with the likes of Greenwood and Lingard or Martial to come on for them later in the game for fresh legs.
Bringing on so many defensive players, and playing an unbalanced team with little attacking threat (and never using Greenwood) was a very poor approach to the 10 man situation and I watched the 2nd half almost resigned to exactly how it played out.