He believes the support Glaws have been getting this season is a response to the progress being made by his squad and the work ethic he has distilled into the team.
Ryan told the Citizen: "The crowd is crucial. The number we get is fantastic, the noise is great. “They don't just come and shout for a side because they are wearing red and white - they shout for you because you are prepared to work really hard."
Glaws fans – and the players – are looking fo revenge over the Tigers after last year’s 44-16 defeat in the play-of final at Twickenham, but if they do win on Sunday it will mean they have beaten the three other top four teams in the last three weeks.
Glaws centres Mike Tindall and Anthony Allen have slight injury worries, but both are expected to be fit.

Tindall is one of two Glaws players in the England squad for the summer trip to New Zealand. The other is Luke Narraway (above), but there are no places for Iain Balshaw or Lesley Vainikolo. Olly Barkley, who joins the club in the summer, is included.
Narraway told the Citizen: "I thought I had an outside chance of being included, so when Dean Ryan pulled me aside and said congratulations, I was delighted. To be honest, I would have been happy with a place on the Saxons tour."
In that squad, for the trip to the USA and Canada for the Churchill Cup, is prop Jack Forster, along with Anthony Allen and Ryan Lamb, while more experienced Alex Brown and Andy Titterrell are also named.
There’s no place in either squad for Nick Wood, while James Simpson-Daniel is expected to have an operation on his shoulder injury during the summer.
The two Gareths, Delve and Cooper, are in the Wales squad for their summer tour to South Afica.
Meanwhile, Ryan says flanker Akapusi Qera have proved himself a world-class player. “I've said that all year,” he said .” When we brought him in from Birmingham, as soon as we started working with him we knew he could be.
“His understanding and ability to fit into structures contradicted the stereotype of a Fijian player. I think that's crucial. He's adapted massively to top level rugby."