Sergio Aguero is considering legal action and police have launched an investigation after crowd trouble and two arrests marred Wigan's shock FA Cup defeat of Manchester City.
Wigan are also to carry out their own 'full investigation' after thousands of supporters spilled onto the pitch following the final whistle at the DW Stadium on Monday, with one of them confronting Aguero.
TV footage of the chaotic scenes appeared to show Aguero raising his arm to push away the fan and later having to be prevented from approaching him.
England's Press Association reports Aguero says the individual shouted "suck my d**k" at him and spat in his ear.
Aguero and City are yet to decide whether to take the matter further but will discuss with lawyers whether they think a common assault has occurred.
As well as this incident, a number of Wigan fans also celebrated at the end of the field where City followers were sat, sparking further disturbances among both sets of supporters.
Advertising hoardings were ripped out and thrown onto the field along with other objects, while missiles were thrown from the field into the stand. There were also clashes between fans and police and stewards.
Police acted to restore order but two arrests were made on suspicion of affray following an incident outside the ground.
"Football is a family event and the disruption that players and fans alike faced last night will not be tolerated," chief superintendent Stuart Ellison of Greater Manchester Police said.
City have not commented but it is understood the Premier League leaders consider the stewarding levels inadequate for a game of such magnitude between two local rivals. They consider what occurred unacceptable and are concerned the safety of players was endangered.
Wigan, for their part, have been quick to launch their own inquiries.
"We were disappointed with the action of a minority of supporters who acted in an inappropriate manner," chief executive Jonathan Jackson said.
"Player and staff safety is of paramount importance and we will conduct a full investigation."
The Football Association is assessing events and will take into consideration the report of referee Anthony Taylor and video footage before considering whether to launch its own investigation.
The governing body could also look into a confrontation between City manager Pep Guardiola and his Wigan counterpart Paul Cook. The pair exchanged heated words after City's Fabian Delph was sent off late in the first half.
League One side Wigan beat the runaway Premier League leaders 1-0 with a 79th- minute strike from Will Grigg.