The 23-year-old right-back has played the whole of his career in Italy and has previously been involved with the Belgian under-21 set up.
Cavanda signed for Lazio at youth level but has only ever made 38 first team appearances for the Roman side in Serie A, enjoying his best run of games towards the end of last season.
The Angolan-born Belgian could be a shrewd signing for West Ham, still at a young age the defender has his best years ahead of him and seems to be gaining plaudits due to some impressive performances.
Cavanda is thought to have interested Arsene Wenger once upon a time and was linked with a move to Arsenal following an impressive debut. The then 20-year-old was tasked with marking former World Player of the Year and World Cup winner Ronaldinho and put in a brave shift, eventually keeping the Brazilian occupied and out of the game for the full ninety minutes.
Demel has been one of West Ham's more promising players over recent seasons and there has been some speculation to suggest the Ivorian could be set for a move back to the Bundesliga, though nothing has yet materialised.
Still at an early stage it is difficult to tell just how much interest there is coming from West Ham's side and indeed how much Lazio would be interested to sell.
Cavanda signed a contract last July that extend his stay at the Serie A side to 2018, so West Ham may have to make a serious cash offer if they are to lure the defender to the Premier League.