GettyChris BurtonCristiano Ronaldo issues public apology as Al-Nassr cancel tour of China due to injury blow for star forwardCristiano RonaldoSaudi Pro LeagueAl Nassr FCChinaCristiano Ronaldo has issued a public apology after seeing his injury contribute to Al-Nassr cancelling their two-game tour of China.Article continues belowArticle continues belowArticle continues belowPortuguese nursing muscle complaintDecision taken not to play friendly gamesMatches will be rearranged for later dateArticle continues below