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SANTA CLARA, Calif. - Earlier this week, the San Francisco 49ers traded for slot receiver/returner Jeremy Kerley. On Tuesday, the reason for that move became clear as the team placed presumptive starting slot receiver Bruce Ellington on injured reserve with a hamstring injury.Ellington suffered the injury last week in the Niners third preseason game against the Green Bay Packers. It happened on a punt return as Ellington stumbled forward to catch the punt before falling awkwardly. He limped off the field and spent most of the first half on the bench with a towel over his head. San Francisco coach Chip Kelly said Ellington had an MRI on Saturday. Ellington is not eligible for the injured reserve/designated to return tag because he was not on the 53-man roster when the preseason ended.Ellingtons two-year career has been marred by various injuries that cost him six games. The 2014 fourth-round pick out of South Carolina has 19 catches for 215 yards and two touchdowns while also serving as the primary returner over two seasons.Kerley, who came in a deal for offensive lineman Brandon Thomas with the Detroit Lions, is expected to help fill both voids.Jeremy gives us some depth as a slot receiver, offensive coordinator Curtis Modkins said. Hes played a lot of football in this league as a slot. He also gives us some versatility as a returner, so hes added depth that we really need and I think hell be able to get caught up to speed fairly quickly.The 49ers also released linebacker Jason Fanaika to get to the league-mandated 75-man roster before Tuesdays deadline.SHANGHAI -- Former Chelsea and Tottenham manager Andre Villas-Boas will replace Sven-Goran Eriksson as coach of Shanghai SIPG, making him the latest top name to join the big-spending Chinese Super League.The 39-year-old Villas-Boas is young, full of passion and with a wealth of coaching experience, the club said Friday in a statement on its official Weibo microblog.We believe Villas-Boas arrival will further enrich the teams technical and tactical play, stimulate the potential of more young players, and lead the team closer to a higher goal, the club said.Speaking at a news conference in Shanghai, Villas-Boas said he was taking the step to Asia with full confidence.SIPG guarantees me that they will continue with the investment in the team, that they want to meet my ambitions, which is to win immediately, the Portuguese coach said, adding that a very good conversation with general manager Sui Guoyang had convinced him to take up the opportunity.Villas-Boas, who was under consideration for the Inter Milan position, said he had offers to stay in Europe but I wanted to try different things.Of course the economic conditions are also very exciting here. Everybody knows that, Villas-Boas said.Villas-Boas made his mark at FC Porto and had stints in charrge at Chelsea and Tottenham in the Premier League before moving to Zenit St.ddddddddddddPetersburg in Russia. Unconfirmed reports put his salary at about $14 million.Eriksson guided Shanghai SIPG to runner-up and third-place finishes in the Chinese Super League in his two seasons and to the quarterfinals of the Asian Champions League.Clubs in the Chinese Super League spent more than $400 million on foreign players in 2016, while high-profile coaches including Eriksson, Luiz Felipe Scolari and Manuel Pellegrini have also lifted the international profile of the league.Among the high-priced imports brought to SIPG is Brazi international Hulk, whose $62 million transfer fee from Zenit St. Petersburg set an Asian record. That topped the $56 million Jiangsu Suning paid this year for Brazilian midfielder Alex Teixeira. Guangzhou Evergrande paid $47 million for Colombia striker Jackson Martinez.Hulk played under Villas-Boas at Zenit St. Petersburg and SIPG management will be looking to the combination to help challenge the supremacy of the Scolari-helmed Guangzhou Evergrande, who have won the league for the last six seasons. ' ' '