Gabby's problem was that he wasn't a direct replacement for Sergio. No one could be, but the amount of work he got through, and his ability to press, got us goals. Scored a few good 'uns himself as well.
Let's be honest, if Sterling, rather then him, had been on the end of that KDB pass at Southampton in 2018, they'd still be looking for the ball. And every time I watch that pass for Bernardo's goal at Villa, the better it looks.
Best of luck to him at Arsenal and particularly if he helps them pip Spurs, united or even Liverpool to a CL spot.