Details of a proposed £14m redevelopment of Graves Tennis and Leisure Centre have been submitted to the council.
One of the features is a 25 metre swimming pool and a teaching pool to replace the current outdated pool.
Two additional tennis courts, a 100 station fitness suite, a regional trampolining and gymnastics base, a 10-lane ten pin bowling and a soft play area are part of the proposed complex at Norton.
The upgraded facilities are being lined up as part of the National Centre for Sport and Exercise Medicine, which is being created in line with the ‘Olympic legacy’ programme with a view to underlining the importance of sport to healthy living.
The council passed the running of the Graves centre to Sheffield International Venues, and now government money is due to finance the improvements after the council failed to secure a private sector leisure partner.
City planners will assess the implications of the suggested two-storey extension.