The likelihood of Chelsea striker Diego Costa transferring to China this winter appears to have reduced following the Chinese Super League’s tightened regulations on foreign players.

Chelsea and owner Roman Abramovich are determined to keep the Spain striker, who has scored 14 Premier League goals in 19 games this season, despite reports of a falling out with head coach Antonio Conte.

Costa had been linked with a mega money move to Tianjin Quanjian, but the CSL club’s owner yesterday said the new limit on foreign imports, with three permitted in matchday squads, could scupper a deal.

Tianjin’s billionaire owner Shu Yuhui told Tianjin TV: “This situation has brought a change to our signing plans.

“If (the rule) had been ‘4+1’ as in the past, then we would have made a big investment this year, but now it seems to be changed to three.

“The online reports about Costa, it’s true we’d like him, and we made an offer for (Edinson) Cavani and were deep in negotiations.”

Shu, who recently met with Costa’s agent Jorge Mendes, claimed he was interested in signing Karim Benzema of Real Madrid and Paris St Germain’s Cavani.

Chelsea and PSG were reluctant to sanction a mid-season transfer, so Tianjin were looking elsewhere. China’s transfer window is open until February 28 ahead of the season starting in March.

“We couldn’t afford to wait half a season,” Shu added.

Radamel Falcao, of Monaco, and Benfica’s Raul Jimenez – two Mendes clients – had been set to move to Tianjin before the rule was introduced, Shu says.

“Mendes came to my home a few days ago and we also had ideas about Costa, but in the process were ready to sign two players, the contracts were done, the price was good – Falcao and Raul Jimenez,” Shu said.

“The contracts were ready, the two players ready to sign, and then we get the news about the salary limits and restrictions on foreign players, so that made us change.”

The news may be a boost to Chelsea’s Premier League title hopes, but the subject of Costa’s future will not go away.

Other reports in the UK yesterday said that Atletico Madrid, Costa’s former club, and Barcelona could try to sign the 28-year-old this summer.

The Brazil-born Spain striker signed a five-year deal on his arrival from Atletico in July 2014 for £32m.

Costa was repeatedly linked with a return to Atletico after being troubled by hamstring problems and disciplinary issues in his first two seasons at Stamford Bridge.

He has this season admitted he had wanted to leave, before stating he was happy, but it was widely reported on Monday that he recently rejected a contract extension on improved terms.

Yesterday, Costa took a full part in training with the first team as his Chelsea team-mates returned following two days off after Saturday’s win at Leicester City.

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