Willie Rioli has been granted leave from Port Adelaide after receiving racist attacks online following his social media post venting personal hatred for Hawthorn.

Rioli did not attend Power training on Tuesday, according to reports, and has been allowed time away from the club.

He is not expected to spend more than a short time away from the club - per club spokesperson information, according to AAP.

On Monday, Rioli posted a collection of abusive messages received from online accounts on his Instagram story following an earlier approach where vented "hatred" for the Hawks.

"My hatred for this club goes way pass last year antics, what they did to my dad, and my brother, is why I can't stand them, not the players #Cococlub," Rioli's earlier post read.

His later post included racist, homophobic and other personal and family taunts in messages he received.

"The racist and homophobic comments sent to Willie on his social media accounts are beyond acceptable," AFL Players' Association boss Paul Marsh said in a statement on Monday.

"For what feels like the 1000th time, we ask these so-called football supporters to stop racially abusing the players.

"Thanks to those fans who continue to call this out."

Port Adelaide issues their own statement backing Rioli and his family, while also addressing their player's use of social media to air his feelings.

"Willie Rioli and his family continue to carry deep-seated pain and sadness from past family experiences," the club said in a statement released on Monday night.

"Despite the depth of feeling Willie and his family have, social media was not the appropriate forum for Willie to share his emotions last night. Willie understands this.

"Willie's welfare remains our priority and the club will continue to provide support for Willie and his family through this time."

Rioli's first post included vision of his late goals in the contest which helped seal Port's 30-point win, and related melee.

The Power and Hawks have emerged as a new bitter rivalry within the AFL on the back of a tense semi-final between the pair last September.

Rioli's later father spent a short period at Hawthorn in the early 1990's without playing a senior game.

His cousin, Cyril, was central in a settlement reached between the club and Indigenous former players last year.

Speaking on Nine's Footy Classified last night, Hawthorn coach Sam Mitchell said he hoped he and Rioli could have a private discussion going forward.

Rioli and Mitchell were teammates at West Coast during the 2017 season.

"I've had a relationship with Willie for a long period of time. We obviously worked together over in the west, and we've been in regular contact since then," Mitchell said.

"I hope that we can have a conversation about this at a more appropriate time, and if we do that remain private.

"I'm not sure about all the detail around it. We haven't heard from Willie himself at this stage.

"Whether I do or don't (speak with Rioli), that would not be public."