Keown wrote in the Daily Mail: "When I watched Ramires getting up and down the pitch at the Nou Camp, he was so fast it looked like he was on a motorbike at times.
"He is so tenacious, a willing runner and has bags of energy - his ability to keep producing high-intensity runs is amazing.
"It was just such a burst which brought Chelsea their goal in the first leg at Stamford Bridge and again last night.
"A lot of players would be exhausted at the end of a run like that but he still had the energy to find a little piece of magic. It was a brilliant finish, full of imagination. It was something Lionel Messi would have been proud of."