Ronan Curtis has returned to Pompey training ahead of the Checkatrade Trophy final.
The Republic of Ireland international has been out of action for around three weeks after suffering a serious finger injury.
Now he will be looking to make his return to the team when they face Sunderland at Wembley on Sunday.
But Kenny Jackett will wait as long as possible before deciding whether the forward is fit enough to feature.
The Blues boss said: “That’s been the one grey area following our league game at Shrewsbury, but he trained and looked okay.
"I’ll have to make a decision about whether he can start or be on the bench, but I’ve got until the end of the week to do that."
“If Ronan’s been fit then he’s always been there or thereabouts in my team and I have to assess whether he’s okay by Sunday.
“I’ll have to make a decision about whether he can start or be on the bench, but I’ve got until the end of the week to do that.”
Two of Pompey’s other injured players will definitely not be available to feature at the national stadium.
Jackett said: “Viv Solomon-Otabor is improving, but won’t make Sunday and I’m not sure yet whether he’ll be fit for Wycombe.
“Dion Donohue, along with Bryn Morris and Andy Cannon, will be back at different stages in the next fortnight and we have to make sure that when they get back, they stay back.
“The latter two of those lads are ineligible to play anyway because they featured for other sides in the competition and it’s the same with Lloyd Isgrove.”