The Bolton striker has struggled to settle in to life at the Lancashire club following his £3.2 million move from Watford last year.
And manager Dougie Freedman is deeply concerned that one of his star players is being distracted by social networking site Twitter.
"It has been quite a move for him and he’s not quite settled,” Freedman said.
“There have been small issues off the field with his tweeting, let’s not hide, and we’re trying to deal with it.
“It could be bordering on an obsession with Twitter and Facebook and all the things that go on with these kids. We are trying to work with him – by taking his phone off him!” joked Freedman.
Sordell has faced problems on Twitter and a 13-year-old fan was banned from attending Millwall matches after racially abusing the player, who represented Great Britain in the Olympics, via the website.
That led in turn to a group of Millwall fans being arrested for holding up a banner reading "Sordell is a ****" during Bolton's trip to The New Den in November.
But Freedman insists that Sordell can shake off his off-field problems and make the most of his talent.
“He’s never had a problem on the field. He works very hard at training, he’s fit, and against Premier League opposition I thought he did reasonably well," the Bolton boss added, referring to last weekend's FA Cup draw with Sunderland.
“We have just got to get him settled down and help him with some of the off-the-field antics.
“With my background working down in London with a lot of young kids I’m just as qualified as anyone to do that, so we’ll give it a go," added Freedman, who was in charge of Crystal Palace's youth team before his promotion to the top job at Selhurst Park where he made his name - and landed the Bolton job - by taking the Eagles on a superb unbeaten run at the beginning of the current season.
“I’m really excited to get one or two of the younger lads in the team and Marvin is only 21 so it’s going to take time.
“I have been here a couple of months now and I think we’re seeing glimmers of hope now with him.”
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