Steve Cotterill has confirmed he has left Pompey to become the new manager of Nottingham Forest.
The 47-year-old revealed compensation has been agreed between the Blues and the east Midlands club.
And Pompey have also announced the former Notts County manager has moved to the City Ground.
Cotterill went to Pompey’s training ground at Eastleigh this morning to say his goodbyes to players and staff.
And on his exit, he confirmed to The News that he will be leaving Fratton Park after 16 months as Blues boss.
Cotterill said: ‘Everything has been finalised (between the two clubs). It’s been a difficult day for me so far.
‘It’s got me quite emotional to be honest.
‘Compensation was agreed past midnight. Now I’m on my way to join Forest.
‘I have a fantastic relationship with people at this football club and I will miss it.’
Cotterill will sign a three-and-a-half-year deal at Nottingham Forest and will be officially unveiled on Monday afternoon.
He added: ‘They are obviously a fantastic club and from the time I knew about their interest, it was obviously flattering.’
Pompey have confirmed first-team coaches Stuart Gray and Guy Whittingham will take charge for the visit of Barnsley this weekend.
A club statement read: ‘Portsmouth Football Club would like to thank Steve for all that he has done during his 16 months at Fratton Park.
‘Coaches Stuart Gray and Guy Whittingham will take charge of first-team affairs for Saturday’s npower Championship encounter with Barnsley as the club conducts its search for a new manager.’