Chelsea recently borrowed Juventus midfielder Dennis Zakaria for a €2.5 million loan, a deal that looks like a tough deal to lose. However, the previous five times Chelsea borrowed from other places, the experience was not very good, and all five players failed to play a proving performance during the loan period.
Saul Neggs
Last season, Chelsea signed Spanish midfielder Saúl Ñíguez from Atletico Madrid, and his arrival carried the expectations of the fans. However, Saul Neggs did not have a good career with the Blues, and under the wave of injuries at the beginning of the season, Saúl Negus was given one opportunity to prove himself again and again, but the results were disappointing. He has a sense of loss in midfield, whether it is controlling passes, advancing, or protecting the ball; He was then moved to left-wing by Thomas Tuchel and did not improve much, failing to provide Marcos Alonso with any competitiveness. At the end of the season, Chelsea also failed to activate his €35 million buyout clause to send him back to Atletico Madrid.
Higuain
In January 2019, Chelsea made a signing in the centre-forward position to meet Sarri's request, borrowing Argentine centre-forward Gonzalo Higuaín from Juventus. Higuain played for Juventus and Napoli, but he was omnipotent, winning the Serie A Golden Boot goalscorer and being named to the best team of the season three times. After moving to the Blues, his performance is not bad, but scoring five goals in 19 games is certainly not a very good statistic. He and Hazard have a chemistry on the pitch, but Sarri, who introduced him, left the team after only one season of coaching the Blues, and Higuain, who belongs to Sarri's "concubine", was of course not retained by the Blues, and was sent back to Juventus in the summer of 2019 to follow Sarri.
Mateo Kovačić
In the summer of 2018, Chelsea borrowed Croat Matteo Kovacic from Real Madrid, whose transfer was seen as a "compensation" for The transfer of Thibault Thibaut Courtois. In the first season of the Blues, Mateo Kovacic had to compete with the Two England internationals Ruben Loftus Cheek and Barkley for a starting midfield position, when Mateo Kovacic's performance was mediocre, the attack lacked bright spots, but the propulsion was strong. At the end of the season, Sarri trusted the team's academy Ruben Loftus-Cheek more and Mateo Kovacic would almost certainly be sent back to Real Madrid. However , Chelsea suffered a transfer ban at the end of the season , and Ruben Loftus-Cheek was also sidelined by a major injury , which disguised Mateo Kovacic 's transfer as a turnaround. After failing to bring in any new signings, Chelsea signed Mateo Kovacic for £40m; As a result, he improved rapidly under Lampard, winning the team's best award in the first season and later leading the Champions League. However, on the performance of loans alone, Mateo Kovacic is definitely unqualified.
Pato
The 2015-16 season was definitely the worst year for Chelsea to move, with the team's top brass not interacting with the manager at all, and Marina Granovskaya making a number of unknown inferior acquisitions in those two transfer windows, of which Pato was one. In January 2016, Chelsea had fired meritorious manager Jose Mourinho and replaced him with Hiddink. In an interview with the media, Hiddink repeatedly stated that he did not need a new center and did not want the team to sign Pato; But Marina Granovskaya turned a deaf ear to this and forced him to bring in the former Brazilian golden boy shooter. After joining the Blues, Pato was not reused as expected, playing only two games for the team and scoring a penalty; At the end of the season, he was sent back to Brazil.
Falcao
In the summer of 2015, Chelsea veteran Drogba decided to get off the bus twice and move to the MLB. Mourinho borrowed Radamel Falcao, a "past three" center, confident that he could save Falcao's career. Falcao joined Manchester United in a similar format a year earlier, encountering a disappointment at Old Trafford, scoring just four goals in 29 games. As a result, Falcao's situation at Chelsea has not improved much, playing 12 games for the Blues throughout the season, scoring only one goal. When the team encounters a wave of injured soldiers, Falcao always appears on the list of injured soldiers at the same time, completely failing to make up for the team's deficiencies; He and his old teammate Diego Costa also don't necessarily have much spark and chemistry, and the Colombian is certainly the worst Number Nine in The Blues' history.