Croatia`s Ivo Karlovic and Serbia`s Novak Djokovic are rivals on tennis courts, but they will team up and record a rap duet, at least this is what Karlovic`s coach Petar Popovic claims, sportske.net reports.

The Croatian tennis ace has already recorded two rap tracks and reportedly Djole cannot wait to do some rapping as well.

Popovic said that Djokovic is very interested in collaborating with the “Giant from Salata”, adding that he believes the song will be a real hit.

The only problem is realising the collaboration, because both tennis stars are over booked. However, the lads will get in the studio as soon they find an open slot.