Actually, maybe you wouldn't. And the £100million man didn't disappoint as he joined Stormzy on stage at Leeds festival.
Grealish, signed from Aston Villa in the summer after some thrilling England cameos at Euro 2020, is already having a productive start to life at the Etihad Stadium.
After a goal against Norwich City last week, he followed it up with an assist for Gabriel Jesus against the Gunners on Saturday.
He wasn't finished there, though, after the game he gave friend Stormzy an assist by joining him at the world famous music festival.
The pair are well known to each other and the musician was seen wearing an England shirt with Grealish on the back over the recent European Championship.
As well as this, Stormzy game the waltzing wing star a shout out on a remix of Yaw Tog's song 'Sore' earlier this year.
He rapped the line 'Slide in the middle like Grealish', which the footballer then used on a video he posted on Instagram.
Although, it is now an interesting link up given Stormzy is a Manchester United supporter and previously helped promote Paul Pobga's return to the club with adidas.
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