Matt Kilgallon, Alan Hutton and Benjani did all join the club in January.
“I’m delighted to get Matt and Alan and Benjani,” he said.
“I think they will be three very good signings for us.
“They’ve all come here with a really good attitude, they really want to play and make a contribution.
“And, in my opinion, we’ve got three very good Premiership players who are going to strengthen us for the run-in.
“I said at the start of the window that it wasn’t easy to do business in this month. I said at the start of the window that we’d probably only make two or three signings.
“And that’s exactly how it’s turned out.
“But, overall, I’ve got to be happy that I have managed to bring in some good players to address some of the problems that were concerning us.
“Alan and Matt are going to really help us in defence, while we needed someone like Benjani with all his attributes and Premier League experience up front.”