Former Chelsea assistant manager Bolo Zenden has warned Jose Mourinho against cashing-in on Oscar this summer after suggesting that the playmaker still has plenty to offer at Stamford Bridge.
Recent speculation has suggested the Blues boss is ready to sell the 23-year-old in the forthcoming transfer window after growing increasingly frustrated with his inconsistent level of performances.
Oscar arrived in west London from Internacional in a £25 million deal in 2012, and has impressed in an array of attacking midfield positions in the first-team.
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He took a little while to adapt to the rigours of Premier League football, but is now regarded as one of the brightest young talents in all of England's top-flight.
However, Mourinho is considering letting the South American schemer leave Chelsea to make way for another new arrival ahead of next season.
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However, Zenden has advised the Portuguese coach to think again, and offered five reasons why the club should retain Oscar's services.
"I obviously worked with Oscar and I think he is a great player," explained the Dutchman in an interview with talkSPORT's Alan Brazil Sports Breakfast Show.
"When he first came over he had to adapt to the Premier League and he wasn't very strong physically, but he can put a shift in, he runs a lot, he works hard, he scores his goals, he sets up his teammates. He is a fantastic player.
"I wouldn't sell him. It is not for nothing that Oscat plays for Brazil as well, which is a massive, strong side."
It wasn't long ago that Oscar penned a new long-term contract extension that ties him to the Blues until 2019, but his recent drop in form has raised doubts about his future moving forward.
He's now gone 13 games in all competitions without a goal for Chelsea and has failed to provide an assist in the Premier League since January 10.
It's a record that is not lost on Mourinho, who has used the Brazil international sparingly over the past three months.
Having completed 90 minutes only once in that time - against Liverpool in the Capital One Cup - it appears the writing is on the wall for the £70,000-a-week star, despite Zenden's words of warning for The Special One.
Chelsea fans: Do you think Jose Mourinho would be making a mistake selling Oscar this summer? Or is he now surplus to requirements at Stamford Bridge? Share your thoughts below...