Ahead of their bout with the Philadelphia Eagles on Sunday, the Dallas Cowboys got a huge update on quarterback Dak Prescott. He is reportedly not going to play and still needs to show improvement before he is cleared to return, though that might be as early as next week.Bleacher Report@BleacherReportDak Prescott (thumb) will not play tonight, per @RapSheetHe still needs to show improvement to practice on Wednesday94094Dak Prescott (thumb) will not play tonight, per @RapSheetHe still needs to show improvement to practice on Wednesday https://t.co/WBFMCy5pisFollowing their loss in Week 1, the Cowboys were in dire straits. Their starting quarterback was out for the foreseeable future and neither the offense nor defense looked particularly good.Since then, they've reeled off four wins in a row and are looking to make it five and take first place on the points table on Sunday. That would also give the Eagles their first loss.There has been speculation amongst NFL fans that the Cowboys have a legitimate quarterback controversy on their hands. There's even a theory that they're keeping the starter out even after he is fully recovered while the team wins with backup quarterback Cooper Rush.NFL fans have reacted to the latest injury update, with many believing Dak Prescott shouldn't come back now.Bleacher Report@BleacherRepoit@BleacherReport @RapSheet no way he is coming back anytime soon after what rush had been doing3@BleacherReport @RapSheet no way he is coming back anytime soon after what rush had been doing73v3n3l3v3n@customanimecard@BleacherReport @RapSheet Dak is scared to play vs the years good eagles team so wants Cooper Rush to bail out a free win for him. Man is getting paid 40 million and can’t beat good teams in his career. Cowboys should trade him asap. Doesn’t have a good arm and always making excuses4@BleacherReport @RapSheet Dak is scared to play vs the years good eagles team so wants Cooper Rush to bail out a free win for him. Man is getting paid 40 million and can’t beat good teams in his career. Cowboys should trade him asap. Doesn’t have a good arm and always making excusesSinai @SinaiNot@BleacherReport @RapSheet Live look at cowboys fans 101@BleacherReport @RapSheet Live look at cowboys fans https://t.co/dElkM1awHw6’7-Eleven Inches ➐@ReadTheBioNgga@BleacherReport @RapSheet “Still needs to show improvement” = Cooper Rush needs to lose981@BleacherReport @RapSheet “Still needs to show improvement” = Cooper Rush needs to lose https://t.co/k4VFZViNcrOh 🐳@OhGodSon_@BleacherReport @RapSheet I wouldn’t play him. Too risky to reinjure it or cause more damage. Cooper Rush should do fine and hopefully it’s a good game.2@BleacherReport @RapSheet I wouldn’t play him. Too risky to reinjure it or cause more damage. Cooper Rush should do fine and hopefully it’s a good game.__iTweet__@__iTweet__@BleacherReport @RapSheet Cooper Rush QB12@BleacherReport @RapSheet Cooper Rush QB1Khaled@Khaledandaysa@BleacherReport @RapSheet This is clearly not dak's call The truth is the cowboys don't believe in him and they're afraid he'll struggle against Philadelphia and fans will start screaming for a QB change and they don't want that@BleacherReport @RapSheet This is clearly not dak's call The truth is the cowboys don't believe in him and they're afraid he'll struggle against Philadelphia and fans will start screaming for a QB change and they don't want thatLogan Kane@LKane023@BleacherReport @RapSheet Cooper Rush szn1@BleacherReport @RapSheet Cooper Rush sznJulius@RiseUp4L@BleacherReport @RapSheet Dak running from the grind1@BleacherReport @RapSheet Dak running from the grindvic.@victoriaklover@BleacherReport @RapSheet thank you, lord.2@BleacherReport @RapSheet thank you, lord.Rush has won the last four games for the Cowboys and is cumulatively 5-0 in his career as a starter.Who should the Cowboys roll with: Dak Prescott or Cooper Rush?While the Cowboys have been winning and have totally turned their season around, they've been without a Pro Bowl quarterback. It's been a surprise to see the team do so well when they haven't exactly had a cakewalk of a schedule.With Cooper Rush, they've defeated the defending AFC champions Cincinnati Bengals and the defending Super Bowl champions Los Angeles Rams. They also beat the New York Giants who have a 4-1 record.Dallas Cowboys v Los Angeles RamsFor this reason, many fans want Rush to stay the starter, with even owner Jerry Jones hinting at such a possibility.However, that would probably not be the wisest decision. Since they are winning games, there's perhaps no pressure to rush Dak Prescott back, but when he's ready, his job should be waiting for him.Over the years, the Cowboys have had an extremely explosive offense. When Prescott has been injured, which has now occurred in his two major stints, as well as a few other missed games here and there, their offense drops off in efficiency.They're simply not as good of an offense without Dak Prescott. The defense has been playing well in their win streak, but they need their starting quarterback to return and take some of the pressure off. As soon as he's ready, it shouldn't be an issue.