Parramatta are refusing to turn one eye to the NRL finals as their top four hopes go on the line against Manly without Blake Ferguson on Sunday.
Ferguson has been ruled out of the Lottoland clash due to an infection in his knee after undergoing minor surgery.
The NSW Origin winger will be replaced by 19-year-old debutant Ethan Parry, with mid-season recruit Waqa Blake not due back until next week with a knee injury.
"(Ferguson) had a bit of time off and he's picked up a bit of an infection in his knee so we'll give him a rest for this game," Arthur said.
"It gives us an opportunity to bring in Ethan Parry and see how he goes."
With the finals just two months away, both Manly (5th) and the Eels (6th) are well and truly in top four contention.
Four wins from their last five - including three straight against the Wests Tigers, Canberra and Brisbane - has Parramatta in the mix for their second top-four finish in three years.
"We haven't spoken about it," Arthur said of finals.
"I'm sure the boys are aware of where we sit and what's ahead of it. We're still focusing on having 17 players each week we can rely upon.
"We've talked about it for a while and we're getting better but we haven't convinced anyone yet."
While the Eels are without their strike weapon in Ferguson, the Sea Eagles welcome back theirs in fullback Tom Trbojevic.
Centre Dylan Walker is off contract at the end of the year and this week spoke of his desire to remain on Sydney's northern beaches.
He has endured a tumultuous 2019 after being charged and eventually found not guilty of domestic violence charges.
Coach Des Hasler said the club was working towards re-signing him for 2020 and beyond.
"It's pretty positive, that's a really good sign," Hasler said.
"He's had a pretty hard year but he's come through, he wants to just wants to get back in and play some footy.
"We're working on (a new contract)."
STATS THAT MATTER
* Parramatta is the only team in the NRL who will not play any of the current top four teams in their run into the finals.
* The Eels have won seven of the past eight against the Sea Eagles, the only exception coming in round two last season when Manly had its biggest ever win over their traditional rivals with a 54-0 victory.
Australian Associated Press