Monaco striker Radamel Falcao is speaking to Chelsea about a possible transfer, Sky sources understand.
West Ham have signed goalkeeper Darren Randolph following his exit from Birmingham City.
The Championship club made an audacious move earlier this week to persuade the former Tottenham, West Ham and Middlesbrough striker to head to Oakwell.
According to Sky Sports, they have now agreed terms with the player, who is a free agent after leaving Zamalek earlier this summer.
The 29-year-old will undergo a medical in South Yorkshire on Monday before signing a one-year deal which will have an option to extend.
Should Mido sign on the dotted line, it would represent a marquee signing for Tykes boss Keith Hill.