By Patrick Akoto
Midfielder Wakaso Mubarak was a second half substitute as Barcelona laid down the marker on the defence of their Spanish title with a 5-0 thrashing of Villarreal on Monday night.
The 20-year-old replaced Ruben Gracia Calmache on the 59th minutes when the away side was already down 3-0 at the Nou Camp.
Sensational Lionel Messi scored twice and a goal each from ex-Asenal captain Cesc Fabregas, fellow summer signing Alexis SÃ¡nchezÂ and Thiago AlcÃ¡ntara capped an incredible night for the European champions.
Wakaso was shown the yellow in the 84th minute for arguing with the referee after he fouled Mascherano.
He was recently offered a three-year contract extension for his sterling performances for the Yellow Submarines.
Villarreal will play in the group stages of the Uefa Champions League this season.