Boss Roberto Di Matteo is desperate to add the 21-year-old to his squad before the new Premier League campaign starts but has seen three bids turned down by Dave Whelan.
The Nigerian international has a year left on his contract and the Latics chairman is demanding the Champions League winners pay £10m to prise him away from the DW Stadium.
The Blues were mulling over the idea of letting young midfielder Josh McEachran join Wigan on loan to smooth over the deal.
But Whelan insist earlier this month that he is only interested in selling Moses, who has a year left on his contract, in a straight cash deal.
He told ESPN: ‘They need to pay the brass up front – we don’t want any part-exchange deals they have offered.
‘Victor is one of the most exciting young talents around, so little wonder Chelsea want him, but if they want him they are going to have to pay the price.
‘We are not interested in picking up one of their players on loan or in part exchange.
“They know the price for Moses. We are looking to reach £10m. If that means £8m cash and some add-ons, that fine, as the lad knows that we want him to stay but that we won’t stand in his way either.
“I don’t like standing in the way of a young player who can make the jump to one of Europe’s great clubs and play well for them, I would just wish him all the best.”
Should Di Matteo’s fresh proposal prove to be successful he will be the third attacking midfielder to arrive at Stamford Bridge this summer following Eden Hazard, Marko Marin and Oscar.