Zarate was handed a start in Wales, but he failed to provide the creative spark needed for Slaven Bilic’s side.
West Ham ended up drawing 0-0 with the struggling Swans in a match which was starved of chances.
And Quinn said: “Zarate is a talented young man, but he has been careless today.
“He had a lovely ball played out to him, but carelessly ran it into the full-back. He needs to buck his ideas up a bit.”
Zarate played for 60 minutes at the Liberty Stadium, but he was virtually ineffective.
The 28-year-old only attempted to make 11 passes, and he only completed 63% of them.
|Chances created||Passing Accuracy||Total Passes||Appearances||Mins Played|
He created one opportunity for his teammates, but it wasn’t a particularly impressive display.
West Ham have now drawn their last three matches 0-0, and their attacking play has clearly been hampered by the injuries to Manuel Lanzini and Dimitri Payet.