ジェラール・ピケ
On 26 November 2017, Vermaelen was selected to start in Barcelona's 1–1 draw with Valencia at the Mestalla Stadium, covering for the suspended Gerard Piqué. He retained his place in central defence for seven of the next eight fixtures, before picking up an injury, including Barça's 3–0 win at the Santiago Bernabéu Stadium against rivals Real Madrid.