"So we should have everybody back for this ballgame," he said.
Fitzgerald was expected to have an MRI exam on Monday to check for a possible medial collateral ligament issue in his right knee, but Arians called it "just precautionary."
"We've got three guys that had an MRI, too, and we don't think any of them are serious," he said. "We get about 15 a week."
REWIND: What we learned in win vs. 49ers
Wetzel did well
John Wetzel got his first official NFL start at left tackle on Sunday and Arians was pleased with how the second-year, undrafted free agent out of Boston College performed.
"I thought John Wetzel played a really solid game," Arians said. "But the other guys can all play better."
Wetzel found himself surrounded by reporters and cameramen upon entering the Cardinals' locker room Monday afternoon. Everyone wanted to know how Jared Veldheer's replacement felt about how he played against the 49ers.
"I played better and I'm glad we won, but there's lots of stuff I need to work on," Wetzel said. "I've got to work on some technique stuff like being consistent with my sets, using my hands, flipping my hips at the right point, small stuff like that."
Asked how fun it was to make his first start, Wetzel said, "Yeah, it's always fun playing. I love the game, but when you get the win it makes it even more fun. It's good being a part of that and hopefully we can keep it rolling and get some more wins in the second half."
Decision looming
The Cardinals, should they choose, can activate this week one of the multiple players they presently have on the injured-reserve list. They can only pick one and most insiders believe it will come down to either running back Chris Johnson or safety Tyvon Branch.
Arians, however, revealed a third candidate that hasn't been mentioned before – inside linebacker Alani Fua.
"We don't talk about Alani Fua, but he's one of those other guys too that was a core special teamer who played 25 plays a game in special teams," Arians said.
Whomever the Cardinals decide to activate to rejoin the 53-man roster, Arians said it will most likely be based on which position group is depleted in depth the most because of injuries or ineffectiveness. Johnson told azcentral sports last week that the team hasn't indicated to him or Branch whom it may plan to activate.
MORE: Cardinals' identity tilting to passing attack
Picking on Palmer
Though Carson Palmer passed for a season-high 376 yards against the 49ers – his 20th as a member of the Cardinals, which ranks second all-time – he only had one touchdown pass and was intercepted twice and fumbled once. He was also sacked twice.
It appeared Palmer held onto the ball too long during most of his miscues.
"A couple times," Arians said. "Obviously on the sack fumble, the ball should have been gone right away to David. And, both of those sacks in the red zone. But yeah, he sacked himself a number of times."
Palmer did, however, enjoy the longest run of his 14-year NFL career, which turned out to be a 16-yard jaunt.
"I thought it was really good. It took a long time," Arians said. "It took a lot of time off the clock, but it was good to see him get out of there and get down. He obviously has worked on his sliding."
Reach McManaman at bob.mcmanaman@arizonarepublic.com. Follow him on Twitter @azbobbymac and listen to him live every Monday at 5:30 p.m. on NBC Sports Radio 1060-AM with Roc and Manuch and every Wednesday night between 7-9 on Fox Sports 910-AM on The Freaks with Kenny and Crash.