Tottenham midfielder Erik Lamela is a doubt for Wednesday's Champions League group game against Bayer Leverkusen.
The 24-year-old has recovered from the illness that saw him miss the Leicester game on Saturday, but he suffered a hip problem in training on Tuesday.
Spurs will also miss defender Toby Alderweireld and Striker Harry Kane through injury.
The away leg ended 0-0 in Germany, with Spurs dominating possession but the home side having better chances.
Midfielder Moussa Sissoko - who is serving a three-match ban for elbowing Bournemouth's Harry Arter - is available as his suspension affects domestic games only.