Rangers assistant manager Ally McCoist believes Nikica Jelavic's arrival has helped Kyle Lafferty develop as a striker.
The ex-Burnley man has come in for criticism from fans for his goals to games ratio having failed to find the back of the net consistently.
However, despite failing to score in Gers' first leg draw with Sporting, McCoist, who will succeed Walter Smith next season, was delighted with his endeavours.
The club landed fellow Northern Irish marksman David Healy in January and McCoist believes the vastly-experienced striker is also helping Lafferty to develop his game.
"Without scoring, I actually thought Kyle had a good game in the first leg. His effort was unbelievable and his work-rate was terrific," McCoist told the club's official website.
"He was getting into good areas and I can definitely see an improvement in him. Yes, his finishing was disappointing but overall he wasn't too bad.
"I have to say Kyle is coming on as a striker. It's maybe not a particularly fast process but he is getting there.
"I think he is looking at Nikica (Jelavic) and learning from him. He can also take something on board from looking at David Healy's finishing skills. Now he has got to keep on learning.
"That's so important. Every striker is ultimately judged when they play as a centre-forward on their goals and Kyle had four or five really good chances last week against Sporting.
"He didn't score and that can happen. I know that better than anybody but his overall display was not too disappointing."