Maurizio Sarri Tips Marcos Alonso to Become World's Best Left Back After Bournemouth Performance

​​Chelsea boss Maurizio Sarri believes Marcos Alonso can become the world's best left back should the Spaniard improve on his defensive work, ​according to ESPN. The 27-year-old defender, who already has one goal and two assists in Chelsea's opening four Premier League matches, impressed in the Blues' 2-0 win over ​Bournemouth and was the closest out of anyone to breaking the deadlock in the first half when his right-footed shot struck the post. He was also involved in the build-up for both... Via All the latest breaking football news, transfer rumours, analysis, and match reports - 90min http://www.90min.com/