Police were called to the park on Salters Lane just before seven this morning after the body was spotted by a passer by.
The area has been cordoned off and officers are treating the death as unexplained at the moment.
They say investigations are still at an early stage.
More top news
The club has confirmed that manager Dick Advocaat has left, after a poor start to the season.
Weather starts to change overnight Sunday into Monday. Mild few days to come, but heavy showers at times. Improving later in the new week
Photos from a day filled with excitement... from the moment the fans began to arrive, to Habana's victory clinching try.