Peterborough United winger Nathaniel Mendez-Laing will miss the start of the season after being ruled out for up to six weeks with a hamstring injury.
The 20-year-old went off clutching his hamstring
during their pre-season friendly against Stevenage on Saturday.
A scan has revealed Mendez-Laing will be out for between four and six weeks.
Manager Darren Ferguson was already without Tommy Rowe, Craig Alcock, Danny Kearns, Emile Sinclair and long-term absentee Dave Hibbert.
Mendez-Laing joined Posh from Wolves last month for an undisclosed fee, having previously spent the whole of the 2010-11 season on loan at London Road.
"The injuries are a blow," Ferguson added. "Alcock, we'd hoped would be back by now - he's not. Rowe, he's out for a long time."
However, Ferguson insisted he had no plans to try and add further players to his squad before the start of the season.
"When new signings come to the club, the way we are, we're quite intense, it takes some longer than others to get used to the tempo," he explained.
"Bozzy's [Michael Bostwick] come in and physically he's there obviously and done very well, whereas a Danny Swanson is not used to it and physically, he might be a couple more weeks.
"You don't sign them for one season, you sign them for a period of time where you've got to improve them - there's a short term, mid-term and a long term, and that's always going to be the case."