“We did talk about his motivation for going, and he decided it was an offer he couldn't refuse”
Portsmouth chief executive David Lampitt
And Portsmouth chief executive David Lampitt said he had hoped to keep Cotterill at Fratton Park.
"I've built up a good personal relationship with Steve over the last 18 months - we've been through some challenging times together, so I'm sad to see him go, but he leaves with our best wishes for his new job," Lampitt told
BBC Radio Solent.
"From a professional and footballing point of view, it creates an opportunity for us to bring in some fresh blood and fresh ideas to the club. We'll take our time doing that to make sure we make the right appointment.
"We did talk about his motivation for going, and he decided it was an offer he couldn't refuse.
"I had several conversations with him over the course of the week, but ultimately it was his decision. I respect that, and we move on and start the search for finding his replacement."
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