Ange Postecoglou savaged Timo Werner for his performance after hauling the Germany international off at half-time against Rangers.
Werner was replaced by Dejan Kulusevski who rescued a point for Tottenham with a late equaliser at Ibrox.
'He wasn't playing anywhere near the level he should,' said Postecoglou when asked if the change was tactical. 'When you've got 18-year-olds out there, it's not acceptable to me. I said that to Timo.
'He's a senior international, he's a German international. In the moment we're in right now, it's not like we've got many options.