It’s a daunting prospect, given the midfielder’s importance to the team.
But it’s something the Blues will need to get their head around fast as a knee injury looks set to keep the 31-year-old out until perhaps the start of April.
It’s a scenario Pompey have faced three times already this season, with a hamstring problem and two separate red card incidents forcing the former Cardiff and Bristol City man to watch on from the stands.
But with the Blues looking to avoid their lowest League One finish since their 2017 return and new head coach John Mousinho wanting his best players available to him to ensure a strong finish to the season, Pack’s absence will be sorely felt.
So what are Mousinho’s midfield options going forward? Here, we have a look.
It’s a scenario Pompey have faced three times already this season, with a hamstring problem and two separate red card incidents forcing the former Cardiff and Bristol City man to watch on from the stands.
![The midfielder, we're told, is on the mend following a hamstring injury that has kept him out of the team since mid-September. John Mousinho reported on Thursday that the former Crewe man will be back training with the squad in full this week, with one eye possibly on the visit of Bolton to Fratton Park on February 28. A careful approach will be essential for Lowery, though, and no-one should expect him to pick up where he left off earlier in the season. It's also worth noting that the 25-year-old is a completely different type of midfielder to Pack, although does know how to pick out a pass!](https://www.portsmouth.co.uk/webimg/b25lY21zOjY3ZDY0MDdlLWQ2YTgtNDkyZS1iNWY2LWFiODBlYjAyYzA1MzoyNDg4ZTFjYS1hYjc0LTRlOTAtYmYyZS0xMDZlMmFhZTM5MTQ=.jpg?crop=3:2&width=640)
5. Tom Lowery
The midfielder, we're told, is on the mend following a hamstring injury that has kept him out of the team since mid-September. John Mousinho reported on Thursday that the former Crewe man will be back training with the squad in full this week, with one eye possibly on the visit of Bolton to Fratton Park on February 28. A careful approach will be essential for Lowery, though, and no-one should expect him to pick up where he left off earlier in the season. It's also worth noting that the 25-year-old is a completely different type of midfielder to Pack, although does know how to pick out a pass! Photo: Jason Brown
![A knee injury has kept the hot prospect out of the team since early January, ruining what has been an impressive breakthrough season for the former Charlton and West Ham youngster. Like Lowery, Pompey fans are very keen to have him back in the team. Would cushion the blow of losing Pack if Mingi were to return in the next couple of weeks. Has returned to training but is believed to be a couple of weeks away still.](https://www.portsmouth.co.uk/webimg/b25lY21zOmIwOTRjYWU5LTU2YmUtNDAxYS04NTVmLWY5ZWJkMTg3YmMyMTo2YmNiNDJiNi1iY2VjLTQzNTctODg4Zi00NWUzMGE0Y2Q3Mjc=.jpg?crop=3:2&width=640)
6. Jay Mingi
A knee injury has kept the hot prospect out of the team since early January, ruining what has been an impressive breakthrough season for the former Charlton and West Ham youngster. Like Lowery, Pompey fans are very keen to have him back in the team. Would cushion the blow of losing Pack if Mingi were to return in the next couple of weeks. Has returned to training but is believed to be a couple of weeks away still. Photo: Jason Brown
![A wildcard entry if you like, but the defender has operated in midfield during his career and could do a job if the remit is to simply sit in front of the back-line and protect it.](https://www.portsmouth.co.uk/webimg/b25lY21zOjU1ZjY3NjEwLTNjZWEtNDYyYS1iMTJjLWRjNDNjMjcxNGViMDoxMzQzYzQ4Mi0wNzBiLTRjZDAtOWZhNy0zOTUyNGI5ODE5ZDI=.jpg?crop=3:2&width=640)
7. Connor Ogilvie
A wildcard entry if you like, but the defender has operated in midfield during his career and could do a job if the remit is to simply sit in front of the back-line and protect it. Photo: Jason Brown
![We all know Hackett has versatility, and there's no doubt he could do a job as a number 8 in a 4-3-3 formation. After all, he plays on the front foot, is energetic and pacey - everything Pompey want from their players.](https://www.portsmouth.co.uk/webimg/b25lY21zOjAxOWE1Y2JkLTFjYmUtNGU3My05MGFiLTI2ZGNiOTdiN2U1MTpjODUxYjg2Yi1iMDkyLTRiYzUtYTBkMS04N2NjMTllMjFjYmE=.jpg?crop=3:2&width=640)
8. Reeco Hackett
We all know Hackett has versatility, and there's no doubt he could do a job as a number 8 in a 4-3-3 formation. After all, he plays on the front foot, is energetic and pacey - everything Pompey want from their players. Photo: Jez Tighe