Olympic Park has recently dazzled onlookers and fans attending Rugby World Cup matches hosted at the stadium.
And while this season promises to be an emotional one as they wave goodbye to one of English football's most famous grounds, there is also an air of excitement about what the future may hold.
'The idea is to break into the top four'
Responding to the question 'What are you hoping our average positions are each season once we move into the Olympic?' on Twitter, Sullivan said: "It's a hard question to answer but the idea is to break into the top four. Only time will tell, maybe (in) three years we can have a real challenge (for a top four place)."
It's a hard question to answer but the idea is to break into the top 4 https://t.co/NBwo6dR2SL— Jack Sullivan (@jsullivanwhu) December 15, 2015
Only time will tell, maybe 3 years we can have a real challenge https://t.co/8wAnjc8lFK— Jack Sullivan (@jsullivanwhu) December 15, 2015
The club looked like they might be in a position to challenge sooner after making a fantastic start to life under Slaven Bilic this season.
Bilic's side have dropped to eighth as a result and while they could go as high as fifth with victory over Swansea City this weekend, their realistic hopes of silverware and success come in the cups and with potential European qualification.
To challenge on those fronts consistently West Ham must increase their profile, revenue streams and status.
Olympic Stadium factor already paying off
The fact the club is moving to the Olympic Stadium is already paying off.
Key defenders Winston Reid and James Tomkins and skipper Mark Noble have all signed long-term deals with the Hammers citing the excitement around the move as a contributing factor.
And the likes of Dimitri Payet, Alex Song and Angelo Ogbonna also bought into the fact they would be playing in the last season at such a historical ground before moving to their impressive new home.
Leaving will be emotional, though, of that there is no doubt.
The ground has been graced by the likes of England World Cup winning trio Bobby Moore, Sir Geoff Hurst and Martin Peters, Billy Bonds, Sir Trevor Brooking, Julian Dicks and more recently Paolo Di Canio and Carlos Tevez as well as countless greats from opposing teams over the years.
But if they are challenging for the Champions League in a few years' time, fans will look back at Upton Park as a fond memory safe in the knowledge their big move paid off.