Manchester United have made a second bid for Barcelona and Spain midfielder Cesc Fabregas.
United confirmed a £25m offer for the 26-year-old last Monday and have increased that to £30m plus add-ons, with executive vice-chairman Ed Woodward leading negotiations.
"As I understand it, Ed had a response [to the first bid]," said Moyes at a news conference in Yokohama.
"We have made a second offer, but Ed is dealing with it rather than me."
It is not clear whether Chelsea's pursuit of United striker Wayne Rooney has any bearing on the club's attempts to sign Fabregas.
The Spaniard came through Barcelona's La Masia academy before Arsenal signed him as a 16-year-old in 2003.
He developed as one of the London club's key players under manager Arsene Wenger before becoming Arsenal captain in November 2008.
Fabregas spent eight years with the Gunners, playing 303 games and scoring 57 goals, but returned to Barcelona in a five-year deal worth £25.4m in 2011 and has helped them win the Copa del Rey in 2011-12 and La Liga in 2012-13.
Fabregas has played 96 times in two seasons with Barcelona, including 60 league games, but has rarely featured in his preferred midfield role, with Xavi, 33, and Andres Iniesta, 29, ahead of him.
He has made 83 appearances for Spain, winning the 2010 World Cup and the European Championship twice.
