By Nick Teale
Arsène Wenger has accused the Dutch Football Federation of not telling him the truth about Robin van Persie's ankle injury.
The striker was initially advised he would be out for six weeks but much more extensive damage was found and Van Persie required surgery to reconstruct his ankle ligaments.
The 26-year-old is now expected to be out for between four and five months.
The news was a huge blow to Van Persie, who had scored eight goals in 15 appearances while spearheading the Gunners' attack before his injury.
The Dutch FA's initial six-week diagnosis has infuriated Wenger, who believes he was not told the truth about the injury.
"I think we have not been told the truth by the Dutch Football Federation which is a real regret," said Wenger.
Before learning the extent of the damage, Van Persie visited a doctor in Serbia who tried to cure the problem by administering placenta to his ankle. Wenger says that would never have happened had the Dutchman known how bad the injury was.
"I think as well if they had not made a mistake in his diagnosis he would not have gone to Serbia to get that kind of treatment.
"If we had found out the damage of his ankle he would never have been cured anyway."