Michael Appleton told Pompey fans waiting to see Akos Buzsaky unleashed: Be patient.
Blues supporters are champing at the bit to view the mercurial Hungarian in action after Appleton pulled off a coup to bring him to Fratton Park.
Despite Buzsaky penning an initial one-month deal, Appleton is confident the midfielder will be at the club until January.
But Pompey’s boss warned it will take weeks before we see the best of the man who was playing Premier League football for QPR last season.
Appleton resisted the temptation to use the 30-year-old in Tuesday’s win over Yeovil as Buzsaky looks to build his fitness.
The boss said: ‘Akos has shown good quality and seems to be enjoying it.
‘From what I’m hearing, it’s taken the imagination of the fans. We have to be patient, though. The lad’s had two weeks’ training since the end of last season.
‘The likelihood is, if I start him in a game now, he’ll pull his hamstring after 30 minutes. You have to be careful.
‘People may expect too much, too soon with a player of his quality.
‘People may think I’m buying time by saying you won’t see the best of him until the end of October but, such is life, that’s what it takes to get fit. That’s what it will be.
‘We’ve got him until January. He can’t play for anyone else until January.
‘If I’d started him on Tuesday he would have looked at me as if I was insane.
‘The fans are desperate to see him on the pitch and I can appreciate that.
‘The way things were going on Tuesday, though, it would have been stupid for me to throw him in.
‘We need to give him a little bit of time.’
Appleton feels Buzsaky’s arrival can be a catalyst for the club, as it sends a message to fans and staff alike.
The Pompey boss also believes Buzsaky brings a string of options to the table when it comes to where he is accommodated in the side.
Appleton said: ‘There are lads there who give us options but when Akos is fit, he could give us options with a little bit more on top.
‘It’s one thing me telling the players where this club could be if it gets a bit of loving and if we get an owner who comes in and wants to do the right thing.
‘If results don’t go our way and we can’t get a couple of players because of financial constraints, doubts start to creep in.
‘But when they see someone like Akos come into the building they realise this might be the place they thought it could be.
‘I think playing him off the front two in a diamond or 4-3-1-2 formation would be his best position.
‘I think he’d be comfortable centrally or even in one of the wide roles coming in off the line, especially that left-hand side.
‘He can come off the left side and get into little pockets and holes.
‘He could play as a second striker but he’d do it differently to how David Norris did it last season.
‘He isn’t going to keep bombing on past the strikers.
‘He’s one of those who could play anywhere apart from the back four.’