Tottenham boss Mauricio Pochettino admits they faced down huge push-back from inside the squad during his first season in charge.
Pochettino wrote for the Daily Mail: "Not everyone accepted the changes and there was a lot of tension.
"In our first season in charge, we took the step not to have the team spend the night at a hotel all together before the League Cup final against Jose Mourinho's Chelsea because we felt doing so wouldn't help them.
"It was best that people just came to play the game.
"The day after we lost that match, one of our own players sang the Jose Mourinho chant to Jesus's (Perez) face.
"That is what we had to contend with."