Considine was drafted in the fourth round of the 2005 NFL Draft by the Philadelphia Eagles. He played four years as a member of the Eagles, having his best season in 2006, when he logged 107 tackles (66 solos), 1.5 sacks and two fumble recoveries, while starting only nine games (stats coming from Cardinals press release). ESPN and Pro Football Reference have him as having 86 tackles, but I recall reading that those stats are unofficial and that teams recount after looking at film.
He signed as a free agent in 2009 and played two seasons with the Jacksonville Jaguars. He was cut after four weeks this season with the Carolina Panthers. He has played mostly strong safety, but can play both safety positions.
Per the press release, he has been "a special teams standout throughout his career," so that will be likely where hsi contribution comes.
His Scouts, Inc. report says this:
Considine has good size and above-average straight-line speed and acceleration but is a bit stiff in the hips and legs. He does not break down well for open field tackles and can be juked in space. He gets a little sloppy in transition and has to build speed when driving on the ball. He's more effective the closer he is to the line of scrimmage and will insert himself with authority on run support. When in coverage he tends to bite on double moves or combination routes and struggles to recover.
As he is apparently a solid special teams player, it seems he will fill that role. Rashad Johnson is likely the starter in Rhodes' place, and before now has been one of the special teams leaders.
How much of a contribution can we expect from Considine? That's hard to say. He was, after all, cut by Carolina recently. I would honestly be surprised if we see him on the field on defense. I could be wrong, but Hamza Abdullah showed in the preseason that he can make a few plays. So only in a situation in which the team would want four safeties on the field at the same time will he likely appear on defense.
He will wear number 37. I have not found whether or not he is on Twitter.
What do you all expect from him? Do you think that we will hear his came called, even on special teams?