Reid suffered the injury in the third quarter of Friday night's impressive victory over Collingwood.
It is rotten timing for the 21-year-old, who had been showing a return to form, and the injury could have longer ramifications.
Reid will be assessed during the bye, which is the same time Tippett becomes eligible after his suspension.
With Lewis Roberts-Thomson expected to recover from a knee injury over the next month, competition amongst the Swans' talls is heating up, but co-captain Kieren Jack doesn't think Reid has much to worry about.
"I wouldn't have thought so. Sam's a pretty vital member of the team," Jack said on Monday.
"He's certainly a talent and the work he does defensively and off the ball goes unnoticed for most people, but we see what he does.
"He's a very important part of the side."
Jack nominated Jesse White and Tommy Walsh, who have both made one appearance for the club this season, as Reid's most likely replacement for Saturday's showdown with Essendon at the SCG.
One man who will be in the line-up is Adam Goodes, who is back in Sydney preparing for the game following a tumultuous weekend.
Jack admits Goodes is feeling weary after all the attention that came with the racial abuse he suffered late in the Magpies game, but he is keen to focus on football.
"Goodesy is OK. I spoke to him last night and saw him again this morning," Jack said.
"He's a bit tired; it was a really big weekend for him obviously, but he's ready to go.
"He's already talking about the Bombers this week, which is great, and we turn our attention to that.
"He'll play this week and he'll be fine."
While the Goodes incident claimed all the headlines, Jack called the victory over the Pies "a huge boost" for the reigning premiers.
Following a poor defeat to Hawthorn two weeks earlier and a Friday night loss to Geelong in round four, Jack admitted the Swans were keen to prove their worth on the big stage.
"It might've been catching the trams in, too. That might've taken our minds off things," Jack joked of the broken down bus that interrupted their trip to the ground.
"We certainly spoke about that - big game, Friday night footy at the MCG.
"We don't get a chance to participate in those games too often, so when we do we want to make sure we perform really well.
"There was a really good feeling in the group pre-game and it really showed once we started."
Jack was also overjoyed to see Lewis Jetta's form, which included a trademark 'slingshot' goal.
"If the camera was on me when he kicked that goal, I was nearly doing handstands," he said.
"We love it as much as everyone else."
James Dampney is a reporter for AFL.com.au. Follow him on Twitter: @AFL_JD
