Wigan manager Roberto Martinez has accused Chelsea of unsettling winger Victor Moses.
Chelsea have failed with several bids for Moses this summer as Wigan chairman Dave Whelan continues to hold out for around £9million for the 21-year-old, who is out of contract next summer.
And Martinez has claimed that the long-running saga is affecting Moses ahead of the start of their new Premier League season.
Wigan start their 2012-13 campaign against Chelsea on Sunday, and the Spaniard said: "If you don't meet a valuation, it becomes paper talk and speculation.
"It happens everywhere, it gives you uncertainty and I don't think that helps. The players are human beings."
Whelan has confirmed Moses wants to move to Stamford Bridge, but Martinez is hoping to keep him at the DW Stadium for as long as possible.
"For Victor it's been an exciting summer," he added.
"I told him he should be very proud, as a footballer at 21, to get the interest he has had."
"Victor knows what he did from December to the end of the season was a great level of performance.
"He can take it on to the next level and I am very excited to have Victor at Wigan, and I hope we can keep him for many years to come."