I don't really remember the last game, but looking at the line up it seems they started a 3 man midfield against dembele & wanyama, hence explaining the possible 'domination'.
https://www.whoscored.com/Matches/1...-League-2016-2017-Manchester-United-Tottenham
I totally agree. Pogba didn't dominate either of them. It was three against two so they couldn't do a whole lot.