Mourinho, meanwhile, confirmed that France striker Karim Benzema, who came on as a second-half substitute against Zaragoza, would miss the match through injury.
``I don't know how long he will be out but he's missing for tomorrow,'' said Mourinho, who also confirmed 19-year-old French defender Raphael Varane will start the match.
Regarding his side's bid to reach the knockout stages, Mourinho added: ``It's a very tough group and any point you can pick up is good.
``It's bad to lose and I think there is a risk for all the teams. Dortmund and us are in a better situation than the other two teams, but it's possible that (Manchester) City will win more points in the second half of the group stage and bounce back.
``It's a very complicated group and all the teams are under pressure.
``Borussia are strong, but we are playing at home and we can do well.''