Plans to bring tower block housing to Manchester's city centre park are being drawn up. It emerged this week that developers have increased the scope of a new tower on Manchester's Piccadilly Plaza to include housing, and the architects competing for the job have been given extra time. The £60 million tower will form part of the wider regeneration of the square and already has an outline planning permission for office and retail use. Competing architects have been asked to produce a second set of designs which includes the housing, putting back their date for submission until 12 May. John McAslan & Partners, Allies & Morrison, Stanton Williams, Stephenson/Bell and Lifschutz Davidson are all in the running for the scheme after being whittled down from 75 expressions of interest. The competition is part of a masterplan by edaw and the developer is Argent.