The Blues’ new assistant head coach will be in the dugout for the trip to Sincil Bank just two days after his move from Chelsea was confirmed.
The last time the 43-year-old was fully involved with Pompey on a game day came on New Year’s Day back in 2013.
Swindon’s County Ground was the venue and unfortunately the result was a 5-0 hammering as the club’s sad demise down the divisions continued.
After a tough 90 minutes, the left-back never played for the club again as he joined Maidstone United.
Still, Harley still has fond memories of his 26-match spell at Fratton Park and it would be interesting to know if he remains in contact with any of those he shared a dressing room with.
If not, let us remind him and you of who they were and what they’ve been up to since that January 1, 2013, day.
9. Johnny Ertl
The popular former Sheffield United, Crystal Palace and Pompey midfielder retired from football at the end of the 2014-15 season, after making more than 80 appearances for the Blues. Since then the now 40-year-old has established himself as a well-known TV and radio pundit in Austria and Germany. Photo: Joe Pepler
10. Darel Russell
The midfielder moved to Toronto FC shortly after his brief 18-game stint at Pompey came to an end in January 2013. The now 42-year-old later signed for Tampa Bay Rowdies before retiring in 2015. Still lives in the States. Photo: Allan Hutchings
11. Scott Allan
The 31-year-old currently plays for Arbroath - but only after being diagnosed with the heart condition hypertrophic cardiomyopathy (HCM), which nearly ended his playing days. Has played for Birmingham, Celtic, Hibs and Dundee since his Fratton Park days Photo: PA Wire