Chelsea skipper John Terry is back in contention for the Blues' crucial Champions League tie against Porto following an ankle injury.

The former England centre-back, 35, returned to training this week after missing the Premier League games against Tottenham and Bournemouth.

Brazil midfielder Ramires is also available after a knock.

But former Porto striker Radamel Falcao remains out, despite taking a limited part in training on Tuesday.

The Colombia international has not played since the home defeat by Liverpool on 31 October because of an unspecified injury.

Jose Mourinho's team need a point against the Portuguese side to reach the knockout stage.

The Premier League champions have struggled domestically, losing eight of their 15 top-flight matches this season to leave them 14th.

But Mourinho believes Blues owner Roman Abramovich will not sack him.

Stats you need to know

• Chelsea have progressed to the knockout stage as group winners in nine of the past 12 campaigns
• The Blues have finished as runners-up twice, being eliminated in the group stage only once - in 2012-13
• Chelsea have only lost twice in 12 matches against Portuguese opposition, winning nine and drawing one
• Mourinho is aiming to become the first manager to win the Champions League with three different teams, after winning with Porto (2004) and Inter Milan (2010)
• Porto have only lost three of their past 14 away European games, winning five
• The Portuguese runners-up reached the quarter-finals last season, losing 7-4 on aggregate to Bayern Munich