Dayot Upamecano and Niklas Sule are two of several central defensive targets being lined up by Chelsea as Thomas Tuchel looks to improve his squad in the summer.
The Blues' hopes of bringing in either defender are, however, linked to Bayern Munich's transfer plans, with the Bavarians believed to be in pole position for RB Leipzig defender Upamecano.
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That has seen Leipzig line up Strasbourg defender Mohamed Simakan as his replacement, with Upamecano's departure seen as inevitable.