Inter have started well under new coach Luciano Spalletti.
Villar was detained on corruption allegations on July 18
Real were unable to contain Guardiola's side once they got their noses in front early in the second half.
Real Madrid and Barcelona have the edge in terms of sheer talent.
The former Sevilla, Villareal and Osasuna coach joined the club this season
Dynamo Kiev were 3-1 home winners against Young Boys Berne and Kazakh champions Astana beat visiting Legia Warsaw.
Barcelona will take on Spanish rivals Real Madrid in a pre-season 'Clasico' in Miami on Saturday.
Unai Emery admitted PSG were still working on transfer targets but refused to be drawn on specific names.
It was their sixth Gold Cup crown, one shy of Mexico's record seven victories in the regional championship for North and Central America and the Caribbean
The 63-year-old is a significant figure in Turkish football and has been the national team's coach since August 2013.
The 18-year-old has been linked with a world-record 180m-euro move to Real, with Spanish sports daily Marca reporting that a fee had been agreed between the two clubs.
The 31-year-old joined from Al Rayyan
The Emir’s Cup champions signed him from Al Arabi in May on a two-year deal
PSG are trying to lure the 25-year-old and are ready to pay off his €222m release clause
Abraham made only two top flight appearances with his parent club