Lionel Messi and Sergio Aguero's friendship is so strong that they should have become clubmates, according to South American football writer Tim Vickery.
Vickery joined Off The Ball to discuss the Manchester City striker's record-breaking weekend in the Premier League, where he became the highest-scoring foreign player with 177 goals.
Vickery spoke about the development of Aguero alongside Messi at international level, and wonders whether there is still the possibility
"[Aguero] was in the Argentina side that won the under-20 World Cup in Holland, and that is where he struck up a great friendship with Leo Messi. The pair of them roomed together.
"I have always thought that it was a shame that we have never seen them together at club level.
"They have a rapport. We have not seen it enough for Argentina - it is one of the many failings of Argentina in recent years.
"They are on the same wavelength on and off the pitch.
Messi and Aguero: special bond
"Last year, it was thought that Aguero's international career might have been over for the reason that Messi would only speak to Aguero and wouldn't speak to anyone else.
"There has been a new Messi since then; a much more collective and outgoing Messi.
"Sergio Aguero is still part of Argentina's plans, although I think that long-term the replacement there is going to be Lautaro Martinez of Inter Milan.
"Perhaps it is a shame that we have never seen Aguero and Messi together at Barcelona.
"I have often expected Barcelona to move for him in the past, and I would love to see that friendship week-to-week at club level because it would be a real treat for fans."