The club are set to complete a club record £400,000 move for Sheffield United midfielder Nick Montgomery and the club have other signings lined up.
Ryan said: "Doncaster is an up and coming place with everything moving forward and the football club is capable of igniting the whole town.
Four more arrivals on the way at Doncaster
"We are hoping to bring in four more new signings, with two of those maybe coming in as early as later this week.
"If we get the players that we want, we will have a very good chance of having a successful season."