Andrew, who had impressed since joining in the summer from Grimsby Town, suffered the injury after being caught three minutes into last weekend’s defeat at AFC Wimbledon. He played the rest of the game not knowing the extent of the damage he had done.
Toffolo, 22, has had loan spells at Swindon Town, Rotherham United, Peterborough United and Scunthorpe United.
“The reason [we’ve signed Harry] is Danny Andrew’s going to be out for the season, he’s done his cruciate,” said Ferguson today.”
“It’s the sixth cruciate we’ve had in 18 months. I’ve never known anything like it to be honest.
“But we had to act quickly and again recruitment-wise we think we’ve done well.
“Harry’s got good experience, played over 50 league games in League One and has a lovely left foot.”