The Italian gaffer was at Cobham on Saturday as some of the Blues squad returned from holiday to undergo fitness and medical tests.
While a number of his players have been away on global duty at the World Cup, those who have not been to Russian Federation have returned to Chelsea's Cobham training ground to start getting into shape once again.
It has been suggested the Blues could even go over €55m and closer to €60m as they look to capture the midfielder. However, the players are unaware of the situation and are faced with waiting until Monday to see who will be running their session.
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Bertens will meet Julia Goerges after Germany's 13th seed ousted Croatian Donna Vekic 6-3 6-2 in their fourth-round contest . Kiki Bertens took care of the last of the top 10 with a 6-3, 7-6 (7/1) victory over Czech seventh seed Karolina Pliskova .
An agreement in principle is in place to bring Sarri to West London, but Chelsea still need to work with Napoli to secure his release from his contract.
Numbers were diminished due to several players' involvement in Russian Federation, but those who didn't feature in Russian Federation were put through their paces with fitness and stretching exercises.
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Meanwhile, Dele Alli, who scored England's second goal, said it was a great team performance. Just four teams remain, all of them from Europe: Belgium, France, Croatia , and England.
Conte, who is now into the final year of his contract, also spent much of the weekend at Chelsea's base.
Sarri guided Napoli to a 2 place finish in the Serie A last season nearly winning the Italian title but the Partenopei replaced him with Carlo Ancelotti.
The prolonged uncertainty surrounding Conte and Sarri has had a paralysing effect on Chelsea's transfer plans in a window already complicated by the World Cup and compressed by the Premier League's earlier deadline, set for August 9.
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A legal settlement dating from the 1990s only allows the government to detain children in adult centers for a brief period. It was the first time the government indicated whether the parents and children would be released or detained together.