By Gabriel Tan
Wilkinson joined the Great Eastern-YEO's S.League giants from Thai Premier League outfit Police United at the start of the season but has had a strained relationship with coach Lee Lim-saeng.
The former Singapore international has reportedly gotten into a number of on-field disagreements with the South Korean tactician, and is said to have unleashed an expletive-laden outburst at his coach after being substituted in a match.
While he managed to force his way back into the side after being left out for a number of games earlier in the campaign, he was recently quoted in a Singaporean tabloid criticising Lee's tactics and player selection after their 3-0 loss to derby rivals SAFFC last Thursday.
And following Saturday's 1-1 draw with Hougang United, Protectors team manager S. Mahalingam confirmed the club will be conducting an internal investigation into the matter, during which Wilkinson will not be available for selection, although he made it clear the player was not 'suspended'.
"Our assistant coach Baek [Jong-seok] will be compiling a report in the next few days and we will then have our own investigation," Mahalingam said.
"Based on our findings, the board will decide what action to take but until then, John will not be selected for any of our games."
Wilkinson first moved to Singapore in 2002 when he joined Woodlands Wellington and won four consecutive S.League titles with SAFFC from 2006 to 2009.
After the 32-year-old midfielder gained Singaporean citizenship, he was called up to the national team and earned 29 caps for the Lions.