Barcelona coach Ernesto Valverde said he would not risk an unfit Lionel Messi in Friday's La Liga opener against Athletic Bilbao and continued to be non committal about Neymar re-joining the club from Paris St Germain. Barca's all-time top scorer and captain Messi injured his calf in training before his side's brief pre-season tour of the United States and has not yet returned to full training a day before his side visit Athletic.