Architecture and design watchdog CABE has rejected Liverpool Football Club's revised plans for the 60-seater New Anfield stadium designed by Ryder HKS Architects.
CABE said: "We warmly welcome the club's intention with the local authority to jointly manage the historic [Stanley] park, and we fully support the integration of community sports facilities around the stadium itself; although, there is more to be done to generate a more elegant transition between the building and the park."
HKS's idea to make the sound of the crowd's singing 'voice' from the rebuilt Kop resonate into the pitch were not fully developed, CABE said: "We are disappointed that at this stage the design does not successfully achieve a cohesive and graceful architectural response to the generating idea relating to the Kop.
"For the reasons stated above we do not believe the proposals should be granted planning permission until these issues are addressed."
Planning permission was granted in 2004 for the original design by Atherden Fuller Leng Architects but a revised application for a £300m stadium was submitted in July following the club's takeover by American owners George Gillett and Tom Hicks. The pair wanted to allow for possible further seating expansion in the future.