Manchester United's Robin van Persie believes playing alongside Wayne Rooney has made him a better player - and says the pair have a 'rare' quality that few other strikers possess.
The Dutchman joined Manchester United in the summer of 2012 from Arsenal and helped his new side canter to their 13th Premier League title.
Between them, Van Persie and Rooney bagged 38 goals last term, with the former Feyenoord man finishing up as the leading scorer in the Premier League.
Despite that impressive tally, Van Persie believes there is more to come from the pair as their partnership continues to grow.
"We realise that we are stronger when we are playing together, as a partnership," the Dutchman told UEFA Champions magazine.
"You are always stronger, in any sport, in life, when you are doing stuff together. With a player of Wayne’s calibre, we can go from strength to strength, and we can become even better.
"One game he will score a couple, the next game I will score a couple. It is important that this partnership is becoming even stronger."
Some expressed concerns that Rooney and Van Persie would be unable to form a successful partnership because of their similarities - but the Dutch international believes that is actually the key to their success.
"In a way we are both "nine-and-a-halves", because we can play high up front and we can drop," he explained.
"That is an extra quality we have, which is quite rare. If you look around you have loads of main strikers, target men, foxes-in-the-boxes, and you have No 10s who are dropping in more.
"With us it’s not obvious because we can both do that job. Wayne is doing a bit more, because he is playing behind me, but we can both do it."
Manchester United resume their Premier League campaign this weekend with a trip to title challengers Chelsea.
However both Van Persie and Rooney have struggled with injury this term and are both out of action.