8:33pm: T.R. Sullivan of MLB.com confirmed the signing, saying that Donnelly will compete for a roster spot in Spring Training.
7:14pm: According to Troy E. Renck of the Denver Post, the Rangers have signed RP Brendan Donnelly to a one-year, $950,000 minor league deal. The contract stipulates that if Donnelly is not on the major league roster between March 27 and April 27, he can ask for his release.
Donnelly underwent Tommy John surgery on his right elbow in 2007. He came back with the Indians last year, posting an underwhelming 8.56 ERA in 13.2 innings. He has a 3.12 ERA in 319 big league games.