“Games against Sheffield have always been tough battles,” said Tonks.
“You can see there is a real togetherness and a real strong culture at the club, and I want to be a part of that.
“Having spoken to Mark Aston you can see he is building something here. He has made some really good signings, and the players that are already here are class acts as well.
“He is taking steps to improve the club and the squad so I’m looking forward to being involved.
“I think top four is definitely achievable. When you look at the sides that will be competing at the top end of the table, I don’t think Sheffield are far away from them at all.
“As long as all the new lads fit in well, which I’m sure we will, I think we will be right up there.”