There is no outward resentment towards City although there is equally no indication their goalkeeping travails since his departure for Italy - which have taken in unsuccessful experiments with Claudio Bravo and Willy Cabellero and will, for now at least, settle on the new signing, Ederson - do not puzzle him.
The England worldwide is not concerned about winning over Guardiola, though, and simply hopes to continue proving himself worthy of a spot to Bilic and Southgate.
"However, the most important thing is to score, I don't care about the celebration".
"Gareth thinks West Ham is the right place for me to be".
One impressed fan said: "Proud of you today Declan as I am sure many Hammers are today". This definitely fits the criteria.
"I want to be an England goalkeeper playing for West Ham, I really do, and that's my intention", he says. It's a privileged position to play for the country.
"You've got Jack Butland and Jordan Pickford now at Everton".
"If I score and I feel I need to celebrate my first goal in my old house with my new team I will do it".
I am a West Ham player now - that's all I think about.
But expectations are higher at West Ham since fans were promised the club would able to compete with the elite following their big move to the London Stadium. I couldn't be any more grateful for the opportunity they've given me. Slaven has come and Mr Gold and Mr Sullivan have come in and made their intentions clear that they want me to be here. "There wasn't an bad lot of movement goalkeeper-wise this summer so I'm very thankful to get this opportunity". "If I can't play for my club, and logistics and business mean I can't be bought or sold but someone's willing to play me elsewhere, then of course it needs to happen".
"The other side of it is quite political with contracts and I respect that, and I respect my parent club".
Bilic has urged his players not to allow their heads to drop too much before they take on Southampton next weekend.