Chelsea manager Frank Lampard will be hoping to secure qualification for the last 16 of the Champions League away to Rennes on Tuesday so that he can rest players ahead of a "brutal" schedule. "I have looked at the schedule and it is brutal. We play Arsenal on Boxing Day and then Aston Villa two days later," Lampard said on Monday. "We need to try to win this game and if we can get into the next round then we could rest players, but we still want to win the group. I am confident in the squad, even if we rotate." Lampard said German midfielder Kai Havertz is fit to play after completing his period of isolation following a positive Covid-19 test this month while defender Thiago Silva is also available after missing their last league game. American forward Christian Pulisic has recovered from a hamstring injury and will be ready for Sunday's Premier League clash against leaders Tottenham Hotspur. "We are fully focused on Rennes, we have to respect this game and we have until Sunday to face Tottenham," added Lampard, whose side lead Group E with seven points from three games.