The former Celtic boss was named new Boro boss on Monday and will succeed Gareth Southgate.
“I don’t need to be here and I don’t have to be here, I’m here because I want to be here,” he said.
“When I left Celtic I said that it would be very difficult for me to retrace my steps in terms of jobs and enjoyment.
“I felt it had to be something different. I never said to anyone that it had to be bigger or better, just something different.
“I will also have a chance here, I know who the chairman is, I know where the money comes from and I know you get time. The stability of the club is one of the reasons I thought I had the chance to develop things the way you would like, developing younger players and making better players better.
“So these things attracted me to the job.”
“Every job has stress,” he added.
“There is always pressure on you to do well. All I want to do is do well, make the players better, make the team play better and that’s what I am all about. Basically, I try and make players better.
“As for pressure, it depends how you deal with it and what you call pressure.”
