Question: Ruslan Mamutov played for which football team that is now located in a city controlled by pro-Russian separatists?

Context paragraphs:
Ruslan Sydykov: Ruslan Dzhumbayevich Sydykov (Russian Руслан Джумбаевич Сыдыков), born in a Tatar family on 4 January 1975, is a former Kyrgyzstani footballer who played as a defender for Dordoi Bishkek.  He was a member of the Kyrgyzstan national football team.  Sydykov won the Kyrgyzstan footballer of the year in 2005 and 2006 .

Tuvalu national football team: The Tuvalu national football team is the international football team of Tuvalu, which trains at the Tuvalu Sports Ground in Funafuti.  Football in Tuvalu is played at club and national team level.  The Tuvalu national football team draws from players in the Tuvalu A-Division; with the national team training at the Tuvalu Sports Ground on Funafuti.  The national team competes in the Pacific Games.  The national team is controlled by the Tuvalu National Football Association (TNFA), which is an associate member of the Oceania Football Confederation (OFC) but not a member of FIFA.

Ildar Amirov: Ildar Amirov (born 9 January 1987) is a Kyrgyzstani footballer of Tatar descent, who is playing as a striker for Chennai City in I-League.  He is a member of the Kyrgyzstan national football team.  He is the older brother of Ruslan.

2000 Iran vs Asia All-Stars Game: On January 21, 2000 Iran national football team played against an Asian all-star side, in an exhibition testimonial match for Iranian captain Nader Mohammadkhani.  Iran's lanky striker Ali Daei was simply unstoppable having scored a hattrick.  Asian all-star's best chances were minute 42, when Ruslan Baltiev's header hit the woodwork and other missed opportunity was Esam Salem's minute 66 penalty that was saved by Davoud Fanaei.  Also Mohammed Bin Hammam was the official VIP guest.

Ruslan Mamutov: Ruslan Mamutov (; born 19 August 1993 in Donetsk, Ukraine) is a professional Ukrainian football midfielder who last played for FC Metalurh Donetsk in the Ukrainian Premier League.

Ruslan Bidnenko: Ruslan Mikhaylovych Bidnenko (born 20 July 1981 in Boryspil Raion) is a retired professional Ukrainian footballer who currently plays for Uzbek League side FK Dinamo Samarqand.  He has played once for the Ukraine national football team.  He mainly plays as a midfielder.

Ruslan Majidov: Ruslan Majidov, also spelled Medzhidov (Azeri: Ruslan Məcidov) (born 22 August 1985) is an Azerbaijani footballer (goalkeeper) who last played for AZAL PFK.  He is a former member of Azerbaijan national football team.  Ruslan has also a Russian citizenship.

Donetsk: Donetsk (Ukrainian: Донецьк , "Donec'k " ] ; Russian: Доне́цк , "Doneck " ] ; former names: Aleksandrovka, Hughesovka, Yuzovka, Stalino (see also: )) is an industrial city in Ukraine on the Kalmius River.  The population was estimated at  (2016 est.) in the city, and over 2,000,000 in the metropolitan area (2011).  According to the 2001 Ukrainian Census, Donetsk was the fifth-largest city in Ukraine.  Since April 2014, the city has been controlled by pro-Russian separatists from the self-proclaimed Donetsk People's Republic.

Ruslan Barburoș: Ruslan Barburoș (15 November 1978 – 29 January 2017) was a Moldovan footballer who played as a forward.  He was the coach of the futsal and beach football club CS Joker-Tornado Chișinău, and coach of the Moldova national beach football team.

Shyrokyne standoff (February–July 2015): The Shyrokyne standoff (February–July 2015) was a battle for the control of the strategic village of Shyrokyne, located approximately 11km east of Mariupol city limits, between Ukrainian forces, led by the Azov Battalion, and Russian backed separatists.  It is part of the larger War in Donbass.  On 10 February 2015, the Azov battalion launched a surprise offensive against pro-Russian separatists associated with the Donetsk People's Republic (DPR) with the aim of pushing the separatist forces away from Mariupol city limits.  The village is located just 10 km from the Ukrainian-controlled city of Mariupol, and was used as a launching point for separatist attacks on the city, which served as the administrative centre of Donetsk Oblast whilst DPR forces control Donetsk city.  Fighting continued until 3 July 2015, when DPR forces unilaterally withdrew from Shyrokyne.  Subsequently a cease-fire was declared in the area.

Supporting paragraphs: Ruslan Mamutov Donetsk
Answer: FC Metalurh Donetsk