The first important appearance for West Coast's number one draft pick Chris Masten will be in court rather than on the field.

He was on Tuesday summonsed by police on a charge of disorderly behaviour in public.

The East Fremantle recruit was caught up in trouble during Australia Day celebrations on Saturday night, prompting police to handcuff the 18-year-old, issue a him a "move-on" order and take him to the South Perth mobile police compound.

After learning of the teenager's misdemeanour, the Eagles hierarchy and leadership group fined Masten $2,000 on Monday, and more significantly suspended him from any involvement in this year's AFL pre-season competition.

Masten will also be made to attend an extra charity event this year under penalties worked out on Monday by West Coast new core values committee and match committee.

And he will also have to front Perth magistrates court on February 18 after WA police confirmed he had been charged in relation with an alleged assault.

"It is a minor assault charge, relating to an incident on the South Perth foreshore around 8.30pm on Saturday," a WA police spokesperson told AAP.

Under the WA criminal code, if found guilty Masten could be fined up to $6,000.

Eagles chief executive Trevor Nisbett said on Monday that Masten was remorseful about his actions but the club was extremely disappointed given the work which had gone into establishing a new set of core values over summer.

He also said the incident was a major setback to Masten's chances of selection in the West Coast line up for the start of the AFL season proper.

"We hope this will be a steep learning curve for one of our rookie players and he can now put this behind him and start his professional career," Nisbett said.

Masten was picked up at No.3 in last year's AFL national draft as part of the deal for trading premiership captain Chris Judd to Carlton.

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