The 19-year-old Martinelli has scored 10 goals in 26 games for the club since moving from Brazilian side Ituano last year.
Mumbai City, which is co-owned by Bollywood actor Ranbir Kapoor, has had the likes of Freddie Ljungberg, Nicolas Anelka and Diego Forlan as their marquee players in the past
The Unwritten Diary of Arsene Wenger: 22 years as Arsenal manager come to a close with win over Huddersfield
Arsenal manager Arsene Wenger managed the club for the last time after being in the job for 22 years. Here's a look at what he may have written if he wrote a diary entry on the occasion
Arsene Wenger's memorable quotes: From calling English food 'dreadful', labelling Jose Mourinho 'stupid' and more
As Arsene Wenger leave Arsenal at the end of 22 years, take a look at the Professor's most memorable quotes
Europa League: Patrice Evra vows to come back 'stronger than ever' after fan-kicking incident leads to UEFA ban
"Sometimes life you can feel really heavy but you always have to keep smiling, and of course keep loving this game," said Evra.
Legends of Spanish giants Barcelona and Real Madrid were to play an exhibition match in memory of Dutch legend and Barcelona star Johan Cryuff.
Nicolas Anelka, Robert Pires, David James, George Boateng and Luis Boa Morte are also scheduled to play in Pakistan.
Ronaldinho, Ryan Giggs and other stars to play two exhibition matches in Pakistan to promote football
Ronaldinho is the lead attraction among the group dubbed "Ronaldinho and friends" which is set to play in Karachi on Saturday and in Lahore on Sunday.
Managerial change has proved to be crucial for Mumbai this season with Alexandre Guimaraes bringing some necessary calm to the club after the chaos under Nicolas Anelka.
Paul Pogba has joined Manchester United from Juventus for around 105 million euros ($116 million), almost four years to the day since he left Old Trafford when his contract expired in 2012. Here are some other high-profile players who left clubs and later re-signed for them.
France's 2-0 win over Germany in the Euro 2016 SF has set off a football fever that has not been seen since the country won the World Cup in 1998.
The Haitian in India: Mumbai City's Sony Norde on losses, choosing India and the challenging ISL season
Norde's case is interesting in the Haiti squad. Having 'become very well-known' after his initial exploits in Argentina and Mexico, he had to take the risk of playing in unknown Bangladesh.
Elano's no-show, Anelka's flop-show and Chennai's downpour: Talking points from ISL's Chennaiyin vs Mumbai City
Amidst heavy downpour, Chennaiyin FC inched closer to a semi-final berth on Tuesday night after handing Mumbai City FC a 3-0 thrashing. Here we look at three talking points from the match which turned the tide in Chennaiyin’s favour.
Chennaiyin FC notched up a superb 3-0 victory over Mumbai City FC to keep themselves afloat for a semifinal berth at the second Hero Indian Super League (ISL) semifinals on Tuesday.
ISL: Nicolas Anelka comes clean on differences with Mumbai City FC, Moritz departure and struggling Chhetri
While Anelka believes in his main threat Sunil Chhetri, there is some doubt as to whether he believes in the rest of the side.
Anelka has also ruled out a return to India, as it stands, at least as a manager. "I don’t think I will come back [to ISL next year as a manager]. You have to speak to the team management."
Desire, fighting spirit: These were the words that were repeated ad-infinitum in Anelka's press conference after the draw against Kerala that felt like a defeat.
ISL 2015: Kerala Blasters score late equaliser against Mumbai City to dash playoff hopes for both sides
Placed right at the bottom half of the points table in the Indian Super League (ISL), both Mumbai City FC and Kerala Blasters FC have no other option but to win all the remaining matches, starting with the one at the DY Patil Stadium here on Thursday, to ensure a place in the play-offs.
ISL: May bench myself because the team has played better without me, says Mumbai City's coach Anelka
When asked whether he would, just like Roberto Carlos this year and Marco Materazzi last year, concentrate more on coaching and let the players take charge on the field, Anelka said that he 'thinks he will do it.'
At the end of the day though, the Chhetri-Anelka partnership has become somewhat like the Steven Gerrard-Frank Lampard duet for England: Two similar players wanting to do what the other does as well and ending up cancelling out each other.