The Danish attacker has yet to play a minute in either of Bournemouth's two Premier League games so far this season.
Parker told the Daily Echo: "Those conversations are those conversations, really.
"Like anything, you move up in levels and the levels of where you're going to is down to the players. Ultimately their talent and their levels - opportunity of course.
"Regarding Emi, big challenge for him, that's clear. Last year, probably didn't play a lot of football at the back end of the season in the Championship. Wasn't really involved in and around it.
"Constant professional, he had a big part to play early on and then just found his way. Found himself out the side, really.
"So, look, a decision probably will be for Emi again this year in that sense.
"And we'll have to make that call when we get closer to that window or between now and then, to see exactly what Emi wants and how that picture may look for him this year.
"But, yeah, ultimately that will be down to him."