Mitrovic has, as even Parker admitted, not had the season he would have wanted on his return to the top flight, despite netting 26 times in 41 appearances on his way to the Sky Bet Championship golden boot last term.
This season he has scored three goals, although Parker does not expect him to depart Craven Cottage this summer.
“I see no reason why (Mitrovic would not be here next season)," Parker said.
“He's under contract. I'm not sure how long he has got but he's got a considerable amount of time on his contract. I don't see why that won't be the case."
Parker had been dismissive of questions concerning his own future at the club following his side's relegation from the Premier League, but on Friday insisted he remains committed to Craven Cottage.
"As always, I'm committed, I've been committed since day one," Parker said.
"My aim is and my ambition is to make this football club as strong and as successful as possible.
"That will always be my ambition. That's never changed."
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