The Red Devils coach revealed that the Chilean striker skipped the visit to the south coast because he took a knock in training.
"We want to win and we think that this is the best team," The Mirror quotes Mourinho as saying.
"Of course, Alexis and [Romelu] Lukaku are injured. So they were not an option.
"But we believe in these players and they deserve a chance. Many are fresher than the others and to play against a team which is strong at home is probably the best thing."
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