Lionel Messi leaving Barcelona and starting a fresh challenge elsewhere would make things interesting for football, according to Bayern Munich attacker Thomas Muller.
Six-time Ballon d'Or winner Messi informed Barca on Tuesday he wants to leave after 19 years at the club and it is believed he wants to activate a possible clause to depart on a free transfer during the current window.
Inter, Paris Saint-Germain and Manchester City, who are managed by former Barca boss Pep Guardiola, are considered the realistic candidates to sign the 33-year-old.