Tottenham manager Jose Mourinho says the half-time clash between goalkeeper Hugo Lloris and forward Son Heung-min was "beautiful" and "something needed for the team to grow up".
"[The argument] was probably as a consequence of our meetings. If you want to blame someone for that it's me," said the 57-year-old.
"I was critical of my boys. They were not critical enough with themselves. I asked them to be more demanding of each other.
"Son is an amazing kid. Everybody likes Son, but the captain told him you have to do more and give more to the team.
"It is something needed for the team to grow up. To grow up you need big personalities. When you have that reaction I have no doubts."