LLLOOLLL, they better not!
The Cowboys have a deal with kicker/punter Brett Maher. He was with the team briefly in the 2013 offseason and had been in the CFL since 2014. He played last season for the Ottawa Redblacks. His signing is more about not overworking Dan Bailey and Chris Jones in the offseason.
Last season, he averaged 46.7 yards on 111 punts, and in three of the four years he's played in Canada, he's averaged at least 45.4. (His off-year was 2015, when he averaged 43.9.)
As a field goal kicker, he has a pro career percentage of 78.1, and has made 82 percent of his attempts the past two seasons, with a long of 58.
I'm not sure of the differences in punting in the CFL and punting in the NFL, but his punt averages top Jones' averages (41.4 last year, 45.9 in 2016, 45.2 in 2015 ...) However, Jones places a lot of punts inside the 20 and is great at directional kicking. It doesn't look like the difference in their averages would be enough for him to overtake Jones considering the other aspects.
As a field goal kicker, he's better than an injured Bailey, but not nearly as good as Bailey at the top of his game.