Mr Versatile will aid Pompey options
And the loan arrival from Wolves has outlined his intent to add attacking qualities to his new side.
Deslandes joined Molineux team-mate Connor Ronan is signing until the end of the season on Wednesday.
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Hide AdThe 20-year-old was brought to the country from France by Jackett in 2015.
Although recruited primarily as a left-back, Deslandes can also operate as a central defender.
With the Blues down to four specialist defenders before his arrival, that manoeuvrability will prove useful.
Deslandes said: ‘I want to give everything to make everyone happy.
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Hide Ad‘I can play as a central defender or left-back. That’s not important to me – the most important thing is to play.
‘I don’t mind which position I play, but playing left-back would be a pleasure. It’s not a problem for me.
‘I have the abilities to defend and play both positions.’
Deslandes has largely operated as a left-back in his career to date and is viewed as competition for Brandon Haunstrup, who has been in impressive form as he makes a mark at senior level.
The French under-20 international feels he brings forward-thinking intent to that position, but not at the price of neglecting defensive duties.
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Hide AdDeslandes added: ‘I like to attack. I would describe myself as an attacking full-back.
‘When you are a full-back you are first a defender, though. If the chance is there to go forward, why not?
‘It’s true, these days full-backs have to attack a lot.
‘Do I prefer to defend or attack? I prefer to have the ball!’