The Cowboys will get an up-close look at veteran wide receiver Keenan Allen for the second Sunday in a row after the 34-year-old was traded from Indianapolis to San Francisco at this week's NFL's trade deadline.

Dallas held the six-time Pro Bowler in check during their 27-23 win over the Colts in Week 9, limiting Allen to four receptions and 26 yards on eight targets. In Week 10, Allen will travel to Arlington wearing red and gold, looking to help a 49ers passing attack that's been decimated by injuries to Christian Kirk, Deebo Samuel, and Mike Evans, as well as a prolonged clash with disgruntled wideout Brandon Aiyuk.

Allen moved into eighth place on the league's all-time receptions list last week versus the Cowboys. His 1,095th catch moved him ahead of Tim Brown; he'll surpass Cris Carter with another seven grabs and top Marvin Harrison with one more after that.

The Cowboys secondary will look to keep that from happening on their watch. Cornerback Joey Porter Jr. did not play at all last week due to a nagging ankle injury but would likely be expected to be responsible for Allen this week if he is able to go.

"He, easily, is a shutdown corner," Cowboys owner Jerry Jones said this week of Porter, who the team traded for in late September. "When he's out there, it's a big difference. We have missed him when he's not out there, so we hope he'll be out there this week."

Since joining the Cowboys, Porter has allowed a completion rate of just 30% and a passer rating when targeted of 39.6. Then again, 49ers quarterback Brock Purdy is a significant upgrade over Daniel Jones.

Allen posted 40 catches for 351 yards and a touchdown in eight games with Indianapolis this season. His 12,402 career receiving yards have him currently ranked 27th all-time in NFL history.

Over his years with the Chargers (twice), Bears, and Colts, Allen is 1-5 lifetime against the Cowboys.