Sky Sports understands that Arsenal have moved into pole position for Argentine international Lucas Biglia.
The 25-year-old Anderlecht player has long been on Arsene Wenger's radar, even from when he first moved to Brussels back in 2006.
Biglia has progressed well in recent seasons and now a number of Europe's top clubs are chasing his signature.
Real Madrid and Inter Milan are amongst the clubs who are keen on Biglia, along with a number of Premier League sides.
But now with Alex Song's future far from certain with Barcelona looking to snap him up, Sky Sports understands Arsenal have returned to the Biglia option.
Biglia is settled in Belgium, but he has never ruled out his desire to link-up with a club like Arsenal.
It is believed that Arsenal's interest in Nuri Sahin would be unaffected by their move for Biglia or another holding midfielder.