Chelsea manager Thomas Tuchel shakes hands with Cesar Azpilicueta after the Champions League in Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo

Chelsea's Mason Mount in action with FC Porto's Marko Grujic during the Champions League Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo

FC Porto's Otavio in action with Chelsea's Cesar Azpilicueta during the Champions League Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo

FC Porto's Mehdi Taremi scores their first goal during the Champions League Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo

Chelsea's Jorginho in action with FC Porto's Jesus Corona during the Champions League Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo

Chelsea manager Thomas Tuchel with Thiago Silva and FC Porto's Evanilson after the Champions League in Quarter Final Second Leg match between Chelsea and Porto at Ramon Sanchez Pizjuan, Seville, Spain, April 13, 2021. Chelsea hung on to reach the Champions League semi-finals with a 2-1 aggregate win despite Mehdi Taremi's stunning overhead kick in added time handing Porto a 1-0 victory in the quarter-final second leg on Tuesday. REUTERS/Marcelo Del Pozo