When the San Francisco 49ers visit Tampa Bay on Sunday, they expect to have All-Pro running back Christian McCaffrey in the backfield for the first time this season.

Speaking to a Bay Area radio station Thursday, Niners coach Kyle Shanahan said of McCaffrey, "He's been awesome these last two days. You never know (about) a setback or anything, but these two days have been great, and I expect to see him out there."

That's welcome news for the 49ers, who have managed a 4-4 record in his absence and come off a bye still as serious contenders to recapture the NFC West and vie for another Super Bowl appearance.

McCaffrey played just 10 combined games with Carolina in 2020 and 2021 but had been remarkably healthy since joining San Francisco in 2022, sitting out just one inconsequential game with a calf injury last season.

However, he has missed all of this season with calf and Achilles injuries, being placed on injured reserve on Sept. 14. McCaffrey traveled to Germany to visit a specialist on Sept. 22 for what was eventually diagnosed as bilateral Achilles tendinitis.

With his injury under control, McCaffrey began practicing on Monday and was listed as a limited participant on the 49ers' practice report both Wednesday and Thursday. The team has three weeks to activate him to the 53-man roster but it appears the club won't use the entire window before making the move.

It's unclear how much of the game plan would include the 2023 NFL Offensive Player of the Year on Sunday.

Jordan Mason has filled in amply at running back, ranking fourth in the NFL in rushing yards (685) with three touchdowns.

But McCaffrey adds another dimension behind quarterback Brock Purdy and a receiving corps depleted by injuries to Brandon Aiyuk (knee), who is out for the season, and Jauan Jennings (hip), who returned to practice this week. McCaffrey led the NFL in yards from scrimmage (2,023) and rushing yards (1,459) last season and tied for the lead in touchdowns (21).

His potential return complicates a massive matchup for Tampa Bay.

"It's just another weapon we've got to worry about, along with him, Deebo (Samuel), George (Kittle), Purdy as well," Buccaneers coach Todd Bowles said. "You've got to worry about five different guys, you can't just worry about McCaffrey. We've got to be sound defensively, and everybody has to do their assignment because (the 49ers are) talented all over the field."

If McCaffrey returns on Sunday, the season basically begins anew for the 49ers, who are just a half-game behind the NFC West-leading Arizona Cardinals (5-4).

Tampa Bay is completing a brutal back-to-back on a short week. The Buccaneers fell to 4-5 after a 30-24 overtime loss at Kansas City on Monday. Another defeat could drop the Bucs further behind the Atlanta Falcons (6-3) in the NFC South. Tampa Bay has lost three in a row and is off next week.

Buccaneers quarterback Baker Mayfield leads the NFL with 23 passing touchdowns and is second in passing yards with 2,389 despite numerous injuries to his wide receivers. Mike Evans (hamstring) has missed the past two games and Chris Godwin is on injured reserve with a season-ending ankle dislocation.

Mayfield said the key on Sunday will be working around a 49ers pass defense led by edge rusher Nick Bosa.

"The way they rush the passer, they're jetting up field, that's their system," he said. "(Linebacker) Fred Warner is a guy in the second level. Unbelievable player, flies around, really makes a defense go, tough to stop in the run game. (They) play so quickly."

The emergence of tight end Cade Otton has been crucial to the Tampa Bay offense and could help offset San Francisco's aggressive approach. The third-year tight end led the Buccaneers with eight receptions and 77 yards against the Chiefs, and he caught his fourth touchdown pass of the season.

On Sunday, Otton could become the second tight end in NFL history to produce eight or more catches in four consecutive games. Kansas City's Travis Kelce holds the record, as he produced a seven-game streak in 2020.

"It's all Cade," Mayfield said. "(He's) a special player that (is) so smart. He knows where to be, he knows exactly what we're trying to get done within whatever scheme we're calling, run or pass, and he understands everything."

--Field Level Media