This Jordi Alba Giroud incident (VIDEO BELOW) took place in the first leg of Arsenal’s round of 16 clash against Barcelona on 23 February, 2016. Giroud made contact with Alba’s shoulders, and the latter went down theatrically clutching his jaw. He then confronted Giroud, and mildly headbutted him (more of a head tap, but it would still classify as an headbutt). No cards shown from the referee though
Alba dive vs Arsenal- Alba headbutting Olivier Giroud
(Credits of this Alba Giroud dive & headbutt video with respective third party uploaders)
Such a great left back, but such a pathetic diver too… sigh…….