The Detroit Red Wings need to upgrade their defense and bolster their power play.

They could do it with one signing Tuesday when NHL free agency opens at noon.

The Red Wings' top priority is a top-four defenseman to replace Kyle Quincey. They would prefer a right-handed shooter, since their other six defensemen shoot left. They would like someone who can quarterback the first power-play unit, an area that needs much improvement.

The Red Wings have been told they're on the short lists for both Matt Niskanen and Dan Boyle, the top right-handed shooting defensemen available. They're no longer in the running for the left-handed shooting Christian Ehrhoff, who is seeking a five-year deal, two more years than the Red Wings are willing to give.

Niskanen, coming off a career season with the Pittsburgh Penguins (10 goals, 46 points) is the premier defenseman available because of his skills and age (27). He likely will be seeking a maximum seven-year deal worth more than $6 million per season. The Red Wings don't have an issue with the term, since he's young. They might be willing to meet his high salary demand as well.

The Red Wings would like to sign Boyle for two years for around $5 million to $5.5 million per season. He might get a three-year offer from someone, however, despite his age (turns 38 on July 12). In addition to the Red Wings, Boyle reportedly has drawn interest from Toronto, Montreal, Tampa Bay and the New York Rangers.