Middlesbrough boss Aitor Karanka has thanked Everton manager Roberto Martinez for helping him settle after moving to England in 2013.
The two sides meet in the League Cup quarter-final on Tuesday.
Karanka was appointed after a spell as Real Madrid number two, 18 years after Martinez joined Wigan as a player.
"I have to thank Roberto, I had a really good conversation with him when I came here and that helped a lot," the 42-year-old told BBC Tees.
"It's interesting because Roberto came here 20 years ago and now he's a successful Premier League manager."
Karanka admitted that he struggled with adapting to his new surroundings at first.
"At that moment it was not good for me because we had lost a few games when I arrived and it was difficult for me with a new country, language and mentality," he said.
After playing three of their four League Cup matches away from home, including beating Manchester United at Old Trafford on penalties, Karanka is pleased with a home draw against Everton.
"We have had a lot of good games both in the FA and Capital One Cup but I like to have a game at home because our crowd deserves a game like that," he added.
"I can understand the atmosphere is confident because we are good in the league and in the cup we beat Man United, but we need to be calm because we will play a really good club in Everton."