A couple of years ago I went on a 'Legends' tour of the Emirates Stadium hosted by Charlie George. In the Q&A session at the end, I asked him if he thought he would have been able to deal with the fitness levels needed in the modern game. He said that, growing up, all he ever wanted to do was play for Arsenal and he would have done whatever it took took to try to achieve that ambition. If that meant improving fitness he would have worked at it. I imagine MLT would have been the same - despite his incredible skill, I guess he would worked to reach whatever fitness levels were needed to play at the highest level. It might not have been at Ralph's standard of fitness, of course!
Incidentally, Charlie George was a superb host for the tour - he's a real character and was very entertaining. He made an effort to speak to everyone individually as we went round. The tour happened to take place one Saturday lunchtime when Arsenal were playing at White Hart Lane in a 12.00 KO & he kept checking his phone for the score updates - he wasn't a happy bunny as Arsenal lost 2-0!