In an interview on Celtic's official website, former star full-back McGrain highlighted the ex-Liverpool ace as the most competent and clever footballer to grace the Celtic Park turf during his time with the Glasgow giants.
"Of my era, Kenny Dalglish was the best to play with for his attributes of passing, creating goals and scoring goals himself - he would be up there," said McGrain.
"Kenny's greatest asset was his brain and his use of physicality. He very rarely got injured. When he played up here he was just fantastic, and while we as players never took him for granted, the Scottish football media did.
"When he did go there was a big gap in our football up here. He replaced Kevin Keegan, who people thought was irreplaceable, and he actually overtook Kevin Keegan in the minds of Liverpool supporters. He blossomed playing with better players in a better league, and grew into a giant of football."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball