Nicolas Jackson could help lure one player to Chelsea this summer. The Senegal international was the only recognised striker in Chelsea‘s squad during the second half of last season, but reinforcements could be on their way. The Blues are being linked with a few centre-forwards, including Aston Villa’s Jhon Duran and Stuttgart’s Serhou Guirassy. According to Fabrizio Romano, Chelsea are deciding whether to sign Duran or not. As for Guirassy, it has been reported that the Blues are in a race against the likes of Arsenal and AC Milan for his signature. A new teammate and rival for Nicolas Jackso…