LME copper may slide after options expiry on fresh new short selling, says HK-based trader. Adds overnight rebound in LME copper to be short-lived, likely only profit taking on short positions by speculators, copper to remain under selling pressure within $5,480-$5,520/ton range. Tips copper to dip to $5,400 in London trade. LME 3-month copper last at $5,490/ton, +$20 on London PM kerb on slight uptick in oil.