Weber could make a spot start Thursday in Toronto, Pete Abraham of The Boston Globe reports.
Nathan Eovalid (elbow) is at least a couple weeks away from returning to the rotation, so Boston will be forced to use less-than-stellar options in that rotation spot in the short term. The other option is Hector Velazquez, who has a 6.41 ERA in 19.2 innings as a starter this season. Weber had a 5.04 ERA and 18:5 K:BB in 25 innings as a starter at Triple-A this season, so he isn't an ideal option either.