Chelsea boss was so pleased with it he even demanded his club signed the groundsman who laid and tended it!Tuchel leads the Blues into Saturday's Champions League final showdown with Manchester City with no worries about the playing surface in Porto.But close friend Christian Heidel, who gave Tuchel his big break in football, says such an obsessive nature is the secret to his success.Heidel is CEO of German minnows Mainz and promoted Tuchel from youth coach to first team manager there in 2009.He told Daily Star Sport: “We were once on a training camp in Austria for a friendly and Thomas was looking really closely at the grass.“He was lying on the ground, measuring the height, sniffing… And he was so thrilled with this pitch he wanted me to.
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