Gunners move ahead of rivals in chase for defender.
Arsenal are ready to step up their interest in Borussia Dortmund centre-back Mats Hummels this January with a £32m bid for the player, according to the Daily Express.
The German international, 25, was been one of the finest defensive players in Europe in recent years, and has been linked several times with the likes of Manchester United and Barcelona.
Arsenal also showed an interest in him in the summer, and look set try again to sign him this January with a big-money offer to put them ahead of their rivals in the chase for his signature.
The Gunners have been short of options at the back since selling Thomas Vermaelen to Barcelona in the summer transfer window.