Jose Mourinho might be ranting and raving and sounding a bit tetchy in his press conferences in the English Premier League, but the Portuguese cut a much relaxed figure ahead of what will be an emotional match for him when Chelsea travel to Portugal to play FC Porto in the Champions League.

Porto is where Mourinho became a famous figure, before bagging the Chelsea job over a decade ago, and the Portuguese will undoubtedly relish playing against his former team come Tuesday at the Estadio do Dragao.

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"When you are lucky to be part of it, when you are not just a simple visitor, you are somebody that did something to deserve to be part of [history of FC Porto], it is very emotional," Mourinho said.

"You realise you did something important time will not delete. So for me it's the kind of visit that makes my opponent's heart a bit softer and I have now to go to the hotel and make it hard again, because I have a big game."

While Chelsea are struggling in the Premier League at the moment, Porto have made a bright start to their domestic campaign, and Mourinho is expecting a tough away test in this Champions League Group G match.

"They have big hopes for the Champions League," Mourinho added. "Games away are always difficult in the Champions League.

"Porto tend to be a big team and it will be very difficult to play against them. They want to win. They know they are not going to face a weak team, as some think."

While Chelsea put their Premier League woes behind them in Champions League Matchday 1, putting four goals past Maccabi Tel Aviv, Porto picked up a hard-fought 2-2 draw against Dynamo Kyiv. Porto manager Julen Lopetegui will now want to start his team's home campaign with a win.

"Their league position does not affect their matches in the Champions League – they won their first game 4-0," Lopetegui said. "They are a great team with great potential and we need to play really well, to our limits, and be technically and tactically perfect.

"I have great respect for Mourinho. He has been incredible in his career, very important to Porto because of his great achievements at domestic and European level.

"We are talking about a Chelsea team that has top players and a top coach. We are a team with a lot of hopes, ambitions and belief, but they will push us to our limits."

Team news: FC Porto: Lopetegui will have to do without Andre Silva, who is suffering from an ankle injury, while Yacine Brahimi is a doubt with a knee problem.

Chelsea: Mourinho pretty much has a full squad to choose from, with only goalkeeper Thibaut Courtois definitely ruled out, as Diego Costa returns to the squad, after missing the Premier League draw with Newcastle United through suspension.

Expected lineups: FC Porto: Casillas; Pereira, Maicon, Marcano, Layun; Ruben Neves, Andre, Imbula; Corona, Aboubakar, Brahimi.

Chelsea: Begovic; Ivanovic, Terry, Zouma, Azpilicueta; Fabregas, Matic; Willian, Oscar, Hazard; Costa.

Where to Watch Live

Get FC Porto vs Chelsea highlights HERE

Get Arsenal vs Olympiakos goals and highlights HERE

Get the Champions League Scores, resuls and report HERE

Chelsea vs FC Porto is set to begin at 12.15 am IST (8.45 pm CET, 7.45 pm BST, 2.45 pm ET). Live coverage of the match will be on Ten Action, with the online live streaming option in India on Ten Sports Live.

Viewers in UK can watch the Champions League Group G game live on BT Sport Europe, while the match can also be watched via live streaming online on Watch BT Sport and the BT Sport app.

US viewers can watch FC Porto vs Chelsea live on Fox Sports, while the match can also be live streamed online on FoxSoccer2Go.

Bein Sports and Bein Sports Connect will show this UEFA Champions League match between Porto and Chelsea live in Australia, Middle East and North Africa and France.