Collin McHugh requested $3.85 million and was offered $3.35 million by the Astros when arbitration figures were exchanged on Friday.
ESPN's Jayson Stark reports the Astros are shopping Collin McHugh and Mike Fiers.
Nick Cafardo of the Boston Globe reports that the Astros would listen to trade offers for Collin McHugh.
Collin McHugh fired 7 2/3 scoreless innings to dominate the Angels 3-0 on Saturday.
Collin McHugh pitched seven innings and allowed two runs Monday in a no-decision against the Mariners.
Collin McHugh pitched well in Wednesday's win over the A's, allowing two runs on six hits over 5 2/3 innings.
Collin McHugh allowed two hits over seven innings and combined with two relievers on a shutout of the Mariners on Friday.
Collin McHugh racked up six strikeouts over five innings of one-run baseball in a victory over the Cubs on Saturday afternoon.
Collin McHugh spun six scoreless innings as the Astros defeated the A's 3-1 on Tuesday.
Collin McHugh allowed three earned runs in five innings but earned a win Wednesday versus the Pirates.
Collin McHugh was shelled in a no-decision against the Orioles on Friday, allowing six runs on nine hits in just three frames.
Colin McHugh wasn't at his best in Saturday's loss to the Blue Jays, allowing three runs on five hits over 5 1/3 innings.
Collin McHugh struck out six and was charged with three runs over seven frames in Monday's loss to the Twins.
Collin McHugh gave up three solo homers in six innings Wednesday in a 3-1 loss to the Blue Jays.