Sources in South London suggest Millwall are keen on the former Crystal Palace player, who has made three starts and one appearance as a substitute this season and 37 and 47 in total for the club.
But stand-in boss Lillis says Croydon-born Scannell, who is in the last 12 months of a three-year contract, can be a key man for Town this time around.
“Sean has done really well for me,” said Lillis, who has had four games at the helm since Mark Robins’ departure.
“He’s always been a threat going forward, but we are trying to work on defensive side of his game, because he can switch off in that area.
“These days, you need wide men who can go up and down, defend as well as attack.
“Sean is the type of needs a bit of love and an arm around him.
“He needs people to believe in him, and I believe him.
“He reminds me of a couple of my old teammates at Aston Villa, Tony Daley and Mark Walters.
“Graham Taylor gave them decent runs in the side, and Sean could do with that now.”
James Vaughan made his first appearance of the season from the bench after recovering from a calf problem.
“It was good to have him back,” said Lillis, who brought the 26-year-old on in place of goalscorer Nahki Wells.
"I would have liked to have played him alongside Nahki, but with only 10 men after Murray Wallace’s red card, we couldn’t go two up top.
“We needed to keep our width, and I wanted to keep two banks of four.
“In addition, Nahki has played a lot of football for me, he’d got his first league goal of the season, and he’d taken a kick on the ankle.
“I wanted to give him a breather and he can be happy with his input.”
As well as Wells, Lillis will run fitness checks on Joel Lynch (ankle), Lee Peltier, who returned after two matches out with a groin problem but was forced off by a recurrence of the injury, and Jonathan Hogg, who missed out with a calf strain.
“Pelts gave us indication he was fully fit and up for it, and with Hoggy out, we were pleased to have him available,” added Lillis.
“He did a good job both in midfield, then at centre-back after the sending off, and it was a blow to have to take him off.”