FORMER Mexico boss Miguel Herrera once claimed that incoming Rangers boss Pedro Caixinha 'wants to fight with everyone.'

The Portuguese coach is expected to arrive in Glasgow today to take charge of the Ibrox side ahead of the Old Firm showdown on Sunday.

Caixinha is currently in charge of Qatar side Al-Gharafa, but had a successful three-year stint in Mexican football with Santos Laguna.

He had many run-ins with other managers and the Mexican football authorities after bust-ups and complaints about referees.

One of the most memorable came when he clashed with Herrera, who was manager of Club America before later going on to take charge of the Mexican national side at the 2014 World Cup in Brazil.

The pair had to be separated and Herrera later explained he wasn't surprised at the clash because of Caixinha's extremely volatile nature.

Herrera said: "Pedro Caixinha wants to fight with everyone.

"They say he is a good guy and a man of God. But why does he want to fight with so many people?

"Already, he has been involved in at least five fights with players or coaches. I was just the latest one.

"The FA are looking at him and no wonder.

"Perhaps it is just the way he is. He has his own ideas and I have mine.

"In the incident with him, I turned round and he was arguing with a coach on my bench.

"I approached him and asked him what the problem was and he wanted to fight me too.

"We both got sent off because of that.

"I tried to calm the situation, but he was beyond that. He was furious and shouting with me.

"Honestly, I don't understand why he gets so mad, but that's up to him."