Tottenham defender Eric Dier was left fuming with officials after Harry Kane's 95th minute winner against Sporting Lisbon was disallowed by VAR.
Spurs thought they'd wrapped up all three points and secured qualification into the round of 16 after Kane smashed the ball into the back of the net following a neat lay-off from Emerson Royal.
To the dismay of Dier and the 60,000 home fans in attendance, VAR ruled that Kane was offside, which left the England defender bemused and needing answers.
In footage that has emerged in the aftermath, Dier can be seen confronting the officials before Dutch referee Makkelie tells the defender that 'it was offside'.