On-loan striker Adam Armstrong is providing the attacking threat that Coventry City have lacked for a long time, says manager Tony Mowbray.
The Sky Blues have won their first two games in League One, with 18-year-old Armstrong scoring four goals.
"We have to be careful not to build him up into something he's not, but he's added what has been missing from the team for a long time," Mowbray said.
"We have to look after him, keep him going and keep his feet on the ground."
|Acid test to come for Sky Blues?|
|After two wins from two games, Coventry host Crewe on Tuesday, a team they have not beaten at home since January 2005.|
|The Sky Blues have lost seven of their last 11 games against the Alex in all competitions.|
"He's playing for a massive club and struggled to get a game, but I would say whoever's playing for Newcastle must be a hell of a player to keep this kid out of the team," Mowbray told BBC Coventry & Warwickshire.
"I've managed in the Premier League and the defenders are all quick and massive. It's a different kettle of fish but we're delighted to have him here."
Armstrong's first goal at The Den, a 35-yard chip over Millwall goalkeeper David Forde, drew special praise.
"The fact that the goalkeeper had come racing out of his box two minutes earlier tells him the keeper's playing really high as a sweeper/keeper," added Mowbray.
"He receives it 40 yards out, doesn't even look and chips it over him into an empty net. It shows me his brain thinking football all the time."