Guy Whittingham could be offered a remarkable Pompey return.
The former Blues boss was a development coach at the club before he was promoted to work with the first team under Steve Cotterill and Michael Appleton.
Whittingham then became Pompey caretaker manager in November of last year and was given the job permanently in the summer.
But there have also been rumours of him reuniting with former boss Cotterill at Bristol City.
Although Pompey dismissed the 49-year-old from the manager’s job recently, Catlin believes the popular former striker could yet be welcomed back.
‘Personally, I would like it to happen,’ said Catlin.
‘I hold Guy in such high regard. He’s a great coach and commands the respect of everyone around him.
‘He is probably the one person in football I’ve never heard anyone have a bad word to say about.
‘That’s to his credit as a man. So why would you not have someone like him back at the club?’
Whether Whittingham would be prepared to accept another coaching role, having been the manager, remains to be seen.
And with the club set to formally unveil their new manager next week, there may be a coaching reshuffle.
But aside from his coaching credentials, Catlin pointed to Whittingham’s history with the club and his continued popularity as reasons on why he could yet be brought back.
He added: ‘Guy is Pompey through and through. He’s still highly regarded – if not idolised – by the fans. He is a proper Pompey legend.
‘While I am here, I would always welcome him back with open arms in some role and some capacity.’