The two sides’ senior teams played against each other in the opening round of Champions League fixtures last week.
Spurs threw away a 2-0 lead to draw the match 2-2 in Greece.
When their under-19 sides met in the UEFA Youth League the match ended in a 1-1 draw.
Greek publication SNDA report that Tottenham were impressed with four of the Olympiacos players and plan to keep tabs on them.
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