“He made great strides in a short time last year,” said Lampard. “I was very confident with putting Billy in for a big part of the season, from his training and then when the time came.
“I possibly held him back slightly at times looking back. He put in some really good performances before his injury.
“We must put some context on it that he is still a young player and we have good competition in the squad in that area.
“I have absolute faith in Billy that he is going to be a big player for us for a long time to come.”