More detail, from the Devils' blog Fire And Ice today:
Devils sign center Rob Niedermayer; Mottau, Fraser not practicing
The Devils have finally added a center.
Devils general manager Lou Lamoriello announced this afternoon that the team has signed Rob Niedermayer, the younger brother or former Devil Scott Niedermayer.
"I felt that we needed a little size and strength down the middle and now with Travis [Zajac] and [Dainius Zubrus] and Robbie [6-2, 200] I think we've got three pretty good size-strength center icemen," Devils general manager Lou Lamoriello said. "We know Robbie very well, of course. We played against him in the Stanley Cup [in 2003 with Anaheim. He's one of those forwards that can be used in different roles."
http://njmg.typepad.com/devilsblog/2009/09/devils-sign-center-rob-niedermayer.html