The Tigers aren’t actively pursuing Mets shortstop Jose Reyes and are instead looking at the market for starting pitchers, sources say.

Tigers officials seem content with their current level of offensive production. The team has scored 139 runs this month, second-most in the American League, and it’s possible that infielder Carlos Guillen (left knee microfracture surgery) will contribute during the second half.

Jose Mijares, one of Guillen’s representatives, told FOXSports.com on Wednesday that Guillen, currently on a rehabilitation assignment at Class A, plans to return to the major leagues after the All-Star break.

Meanwhile, the Tigers’ pitching staff has become a growing concern. Outside of ace Justin Verlander, the team has a 5.19 ERA in June. Detroit manager Jim Leyland announced today that rookie left-hander Charlie Furbush will replace the struggling Phil Coke in his rotation.

So, the Tigers will have roughly the next month to decide whether Furbush – or another internal candidate such as Andrew Oliver or Jacob Turner, both of whom are in the minors – can be a reliable starter down the stretch. If not, they will intensify their search for a starting pitcher leading up to the July 31 non-waiver trade deadline.

Other than Furbush, the Tigers’ rotation is entirely right-handed, and Comerica Park traditionally plays well to left-handed starters. The trade market is thin on starters at the moment, but Houston, with the worst record in the majors, could make southpaw Wandy Rodriguez available if the franchise’s ownership transition is complete before the end of next month.

-- Jon Paul Morosi