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.
9. Michael Jacobs
Like Lowery, Jacobs is not a natural replacement for Pack. However, he can operate in midfield, so could help free up someone else to fulfil the Pack brief while the Blues wait on the former Cardiff man to return. Photo: Graham Hunt
10. Free agents
Let's face it, this is the least likely option. However, John Mousinho said after the transfer window closed it's a route that he was open-minded about. There's always a few out-of-contract players knocking about, so how about a short-term move for the likes of former Brighton and Burnley midfielder Dale Stephens or ex-Leicester and Chelsea man Danny Drinkwater? Photo: Pool