Chelsea's Guiu expected to join RB Leipzig

[Getty Images]Chelsea have sanctioned the permanent transfer of striker Marc Guiu to German club RB Leipzig.The 20-year-old is expected to join Leipzig, although sources in Germany insist there is still work to be done before the deal can be completed.There are few details at this stage about the potential fee, although Guiu is understood to have been valued at around £25m.The Spain Under-21 international is nearing a Stamford Bridge exit after joining from his boyhood club Barcelona in 20