Shanghai SIPG sign ex-Madrid defender Carvalho

Carvalho's signing had been finalised by the end of winter training, but the announcement was delayed as China's new restrictions on foreign players forced the team to "think carefully" about his role, Xinhua cited SIPG as saying.

Last month, the Chinese Football Association announced it would cut foreign player numbers in top-flight teams to curb massive spending on overseas talent.

The new rules will permit teams to field no more than three foreigners in a match when the new 2017 season begins in March. 

This will put a squeeze on the game time for SIPG's stable of talent which already includes four foreign players: Brazilian powerhouses Oscar, Hulk, and Elkeson, as well as Uzbek midfielder Odil Ahmedov.

"If any of [the] other four foreign players was injured, Carvalho will get chance. As one of the top defenders in the world, his experience is important to help young players," Shanghai SIPG president Chen Xuyuan told Xinhua.

In 2016, China was one of the world's top five spenders on international football players, doubling its payouts from the previous year to $451 million.

In December, China broke the Asian transfer record for the fifth time in a year when SIPG paid Chelsea a reported 60 million euros ($63 million) for Brazilian midfielder Oscar.

Last summer, the team purchased striker Hulk for more than $55 million.

Carvalho, 38, comes to SIPG from French Ligue 1 team Monaco.