AN INCREDIBLE new plan to replace Milan's world famous football stadium by burying it underground has been unveiled. The £1.5billion scheme is backed by Italian football giants AC Milan and Inter Milan who currently share the iconic San Siro grounds. The new underground stadium has been designed by architect Davide Bruno who presented the idea during the Il Foglio a San Siro event. The bizarre plan would see a brand new football stadium constructed entirely below street level. The stadium would replace the San Siro grounds and would be shared by the Italian rivals Inter Milan and AC Milan. The plan also includes the construction of luxury hotels and restaurants, as well as event spaces. And that's not all - the stadium would have its own metro station and multi-storey car park to make travel to and from the grounds as smooth as possible. While Milan's players are scoring goals underground, those who don't care for the sport can enjoy the new park above it. Plans for the park include 20,000 Trees, 500,000 Flowers and more than 4miles of slopes and pedestrian paths. The proposed project would take between 4-5 years to complete, according to Bruno. An AC Milan fan account called Homeofmilan posted the news on Instagram and asked fans what they thought. Fans clashed in the comments with many slamming the idea as unrealistic while others praised its creativity. One angry Instagram user wrote: "I have seen many stupid things in my Life. But this is one of the most stupid ideas I have seen." Another shot back: "A lot of people will hate on this idea but it’s honestly so cool and exactly what you should want for an urban development." Inter Milan and AC Milan had previously considered redeveloping the iconic San Siro Stadium, but neither team considered the proposal viable. The clubs also considered knocking it down to build a new stadium but a local heritage commission found the site to have "cultural interest", meaning it couldn't be demolished. Officially known as the Stadio Giuseppe Meazza, the grounds have homed AC Milan since 1927 and Inter from 1947. If the plans for the new stadium go ahead, it will be the first soccer arena built in Italy since 2011. Juventus opened their 40,000-seater Allianz Stadium in Turin in 2011.