Michael Drennan has pledged to show the Fratton faithful his true ability after returning to Pompey.
The 20-year-old has revealed he was disappointed with his displays in his previous Blues stay.
The striker netted three times in 10 loan games at the end of last season, including a stunning strike from distance against Dagenham & Redbridge.
Now he is back for an initial month from Aston Villa and in the frame to make tomorrow’s squad against Hartlepool.
And Drennan insists he is leaner, fitter and more determined than ever to prove his worth.
He said: ‘Hopefully I can do better than I did last time because I didn’t do too well.
‘I want to push on. I feel stronger and fitter now and hopefully can score some goals.
‘Last season here I was not as good as I can be. I can do much better and was probably a bit overweight.
‘I’ve now lost a good bit of weight – about 4-5kg – and feel fit and stronger and, hopefully, can show it on the pitch.
‘I feel much fitter now. Obviously, you can always get much fitter and sharper but I can last 90 minutes and feel sharp and can come alive in the box.
‘I am going to try to hold down a place for a month and see what happens after that.
‘It’s a long trip to Hartlepool first up but, hopefully, I can get some minutes on the pitch and show what I can do.
‘At the start of the week I was playing for Villa’s development group, that is how quickly football can change.
‘It’s just a matter of whether you take it or not.’