I was blocked by ref - Campbell

The Swedish official allowed Porto to take a quick free-kick in the last-16, first leg clash after Lukasz Fabianski picked up the central defender's back-pass.Hansson took the ball from Fabianski and gave it to Ruben Micael, who picked out Falcao to score the decisive goal against a disorganised Arsenal defence as the first leg ended 2-1 in favour of the hosts.Campbell is unhappy that the referee gave Porto the advantage by blocking him out of the move that prevented him from aiding his team-mates."He's picked the ball up, but afterwards the referee is in front of me and basically giving them an advantage," he said."I can't get in front of the ball. He's basically blocked me to get to the ball." Arsenal vs Porto. Click here to bet.  

Source: Team_Talk