As much as some people harp about Grabner, he's exactly the type of older player you want to sign. You can't count on them providing an offensive element any more, but can use them in defensive settings like the penalty-kill. Michael Grabner is within a few seconds of playing the most penalty-killing per game of any forward in the NHL. (Byron Froese makes the top 10 as well)
The only thing I could see doing with Antrovpov is give him the over 2 minutes a game on the PP like Brad Boyes had gotten. Hopefully his Tim Kerr impression would be better and end up with more then 2 pp goals to show for it. But hopefully there would be younger options.