He's being aggressive. Obviously it has already paid off by being able to trade Alleman and Ndukwe.
My guess is he's still trying to trade Brandon London, Matt Roth and Rodrique Wright.
As for acquisitions...I wouldn't be surprised if the Dolphins are in the market for someone that looks like a stellar KR/PR combo guy. Roscoe Parrish is deadly on punt returns, and he was deadly as a rookie on kick returns. The Dolphins could make a run at him.
This Stefon Logan kid up in Pittsburgh is making serious waves but the Steelers have the luxury of already having both Joe Burnett and Mike Wallace, who can handle return duties for them in addition to being more than solid prospects at their natural position. Logan is just purely a return man.
Some folks have brought up Josh Cribbs and I know he's asked for a trade but the Browns will never do it. They love him not only as a return guy but also on offense.
The Dolphins might get a good look tonight at a guy they could try and trade for in Clifton Smith. He's in a bad numbers game because Cadillac looks healthy, and that gives them three high quality tailbacks in Earnest Graham, Derrick Ward and Cadillac Williams. Not to mention, they have two good fullbacks in BJ Askew and Jameel Cook, both of which were on the roster a lot a year ago. Clifton Smith averaged 27.6 yards on 36 kick returns a year ago, with a 97 yard TD...and 14.1 yards on 23 punt returns, with one 70 yard TD. It wasn't just the blocking, as Dexter Jackson averaged only 23.4 yards on 14 kickoff returns, and 4.9 yards on 20 punt returns.
Another one to keep an eye on would be Mark Jones, who was a good KR/PR in Carolina a year ago, is now fighting a numbers game at WR in Tennessee. He has averaged 24.9 yards on 50 kick returns, and 11.5 yards on 51 punt returns, over the last two seasons with Tampa Bay and Carolina. He has no TDs in his career though, and his KR long is 59 yards, his PR long is 55 yards. One might argue that the Dolphins can reproduce those results with someone already on roster.