David Silva fired City in front just before half-time during the Manchester derby at Old Trafford.
And avid City supporter Gallagher – who was Sky Sports special guest in the studio for the day – was snapped celebrating wildly as he watched his side take the lead.
United equalised through Marcus Rashford just two minutes later, but Gallagher was quick to take a dig at Neville during half-time.
“But it’s been fascinating watching this fella here having a mental breakdown up until the goal,” he said.
“If I knew when I’m watching from home that this is what he’s like when he’s watching United, it’s going to make it all the more enjoyable for me this season I think.”
Take a look through the gallery above to see Noel Gallagher’s hilarious reaction to Manchester City’s opening goal!