Caruso St John's Adam Caruso, who worked with Sergison Bates on the Wharf Bar, was on the jury in the masterplan competition.
The 1998 Wharf Bar sits adjacent to Caruso St John's hugely successful New Walsall Gallery and was voted best new pub of that year.
Foreign architects and students often visit the bar, which Sergison Bates credits with launching its international career.
But it was revealed last week ( Sergison Bates 'first key building' faces wrecking ball) that the Alsop masterplan for the area proposes knocking down the building.
Now - due to Caruso's involvement on the jury - questions have emerged over the way Alsop was picked and whether Caruso could really have been involved with selecting a proposal that would see the end of the bar.
Alsop has described the Wharf Bar as 'horrible', adding: 'I don't like it at all.'