Portsmouth chief Peter Storrie believes they'll make four quality signings this summer.
Storrie said: "It's important to have a squad with depth and quality. Very important. There are perhaps going to be more chances for players who might have been thinking about moving on.
"One or two who haven't been getting so much of a chance may now think it might be worth hanging around. They may get more chances to get in the team. Harry certainly wants as many options as possible.
"That's what we are going to try to give him. We are looking at three or four players. That's where we will probably be.
"But if one or two go, we may well bump up the numbers a little bit. That's what we are looking at."