The Hammers will move to the Olympic stadium two years from now and McCartney recalls Sunderland's switch from Roker Park to the Stadium of Light.
"The first-ever time I went across to Sunderland when I was 16, I went to the last match at Roker Park against Liverpool," McCartney told whufc.com. "it is hard to believe that stadium has been transformed from a football stadium into apartments and that's where my first house was!
"I was there for the last game at Roker Park, then they moved into the new stadium. When you look at Sunderland now, they have a great stadium, a great training ground and they have everything in place to be a top club.
"From what I remember, Roker Park didn't hold that many people - not even half as many as the Stadium of Light does - so to go from having 15 or 20,000 every week to having 45,000 every week made a big difference, and it can do for West Ham too."
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