Swansea manager Carlos Carvalhal feels the controversial Video Assistant Referee system has the capacity to work, just as he believes it has done in his native Portugal.
The VAR system was once again the centre of attention during Tottenham's FA Cup replay win against Rochdale on Wednesday night as several decisions prompted confusion and controversy.
Spurs boss Mauricio Pochettino later claimed the stop-start nature of VAR could 'kill the emotion' of the game, while former Premier League referee Mark Halsey highlighted the mistakes he felt were made at Wembley after video scrutiny.
But Carvalhal said: 'It is a question of attitude.