Lionel Messi 'headbutts' Roma player in Barcelona win
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Barcelona forward Lionel Messi is lucky not to be sent off following a clash with Roma defender Mapou Yanga-Mbiwa during a pre-season friendly.
Instead the Argentina international received a yellow card as the Spanish champions won the match 3-0 thanks to goals from himself Neymar and Ivan Rakitic.
Barcelona will begin the defence of their title against Athletic Bilbao on 23 August.
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