Jose Quintana is suffering through one of the worst stretches of his career, but it might not have a dramatic impact on the trade value of the Chicago White Sox left-hander.

Jon Heyman of FanRag Sports cites a rival general manager who thinks Quintana will remain a valuable commodity despite a 2-7 record, 5.60 ERA and 1.40 WHIP in 11 starts.

Michael Beller of SI.com expressed a similar sentiment earlier this week, calling Quintana the “crown jewel” of the White Sox summer trade chips that are also expected to include closer David Robertson and third baseman Todd Frazier.

Interested clubs, however, might be reconsidering the quantity of quality of prospects they might offer for Quintana, who had a combined 3.41 ERA in his first five seasons.

The rebuilding White Sox can still keep the price high due because of Quintana’s team-friendly contract that pays him $7 million this year and keeps him under club control through the 2020 season.

--Doug Mittler