Wenger felt the pass was "accidental" and that Hansson allowed the Gunners no time to defend the free-kick.

BBC: Arsene Wenger is unhappy with Porto's winning goal

Motherwell were given the opportunity to score an away goal in the 56th minute after Guga tugged Sutton's shirt in the box as Flamurtari tried to defend Hammell's free-kick.

BBC: Flamurtari 1-0 Motherwell

But the visitors were forced to defend when Sasa Papac brought down Karagounis to concede a free-kick in a dangerous right-wing position.

BBC: Panathinaikos 1-1 Rangers