Actor Vijay Sethupathi, who has had six releases this year so far, has signed yet another Tamil outing. He will be seen playing a cameo in Vishnu Vishal-starrer upcoming Tamil comedy "Kathanayagan"."Vijay has agreed to play a cameo due to his friendship with Vishnu. It will be a special role and one that will appeal to audiences across all sections," a source from the film's unit told IANS.Directed by Muruganandam, the film features Catherine Tresa as the female lead and has music by Sean Roldan.Vishnu Vishal will be bankrolling the project under his home banner.