Lennon worked with McDonald for the first time on Friday and before yesterday's defeat to Motherwell said: "I like the look of McDonald. He is a fantastic goalscorer.
"I loved his attitude and manner. He has a bit of cockiness about him and the aggression you need.
"He looked the part and has been great for Celtic this season with the goals he has scored. I'm sure he has a few left in him between now and the end of the campaign."