Argentina coach Diego Maradona said that Sergio Aguero should leave Atletico Madrid if the Spanish team kept on stumbling. Los Colchoneros had a horrendous start to the season, having been eliminated from the UEFA Champions League and suffered recurring losses in the Primera Liga. Argentina striker Aguero, who's also Maradona's son-in-law, has drawn the attention of European powerhouses such as Chelsea, but he didn't move away from Atletico. Maradona stressed that the 21-year-old would have to carry on his career elsewhere if Atletico couldn't bolster their squad with new signings. "To make the best of (Sergio) Aguero's qualities they (Atletico) must create a team worthy of him and sign some players," Argentina legend Maradona told Marca. "Otherwise, they must let him go and not harm his development as a player."