Chelsea captain John Terry will undergo a scan on Thursday after revealing he has cracked two ribs.
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The 31-year-old came off an hour into Wednesday's Champions League quarter-final second leg clash against Benfica having initially suffered the injury in the first-leg victory in Lisbon.
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Despite playing in Saturday's Premier League win over Aston Villa, Terry admitted he was gasping for air after Wednesday night's 2-1 win at Stamford Bridge.
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John Terry. Photo:AFP
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"I couldn't breathe and my chest was closing up," said Terry.
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"I was having a difficult time out there, especially in the first half. Hopefully, I'll be okay.
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"I don't know how long I'll be out. I will have a scan in the morning (Thursday) and we will see where we go from there. It's just horrible.
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"When you get one in the ribs, you can't do anything about it, you can't treat it, you just have let it heal, but I can get through games definitely.
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"I thought it was okay but, later in the second half, it just seemed to be getting worse and I was struggling to breathe to be honest.
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"It was difficult. I have never felt anything like that before."
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Chelsea struggled badly during Terry's absence with a knee injury earlier this year and it would be a blow if the captain were not available for their semi-final clash with champions Barcelona.
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"It's a very good achievement to reach our sixth semi-final in nine years, but we want to go through to the end," said Terry.
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"Clearly, that's going to be tough against Barcelona, but we're playing well.
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"I am not sure anyone will fancy playing us at the moment because we are a very good side, especially in this competition. Barcelona are a very good team, but home and away we're a very solid side as well.
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"We have shown that away against a very good Benfica side and proved on big nights at Stamford Bridge that we can really upset teams as well.
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"We're confident. It is important we keep this momentum because we're going well in the league. That is the key for us."
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Gary Cahill, who signed from Bolton in January, came on for Terry on Wednesday night and is confident of stepping in against Barca if necessary.
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"I am ready to face them if selected. It is exciting to play against Barcelona," he said. "This is why I joined the club. If called upon to play in that game, it will be fantastic."
