I do not think Linas Kleiza is a bad player or was a terrible signing. He actually has a pretty reasonable contract, and has some skills/grit. However, I do not think he warrants minutes in Toronto.
I do not see Kleiza getting much better than he is. Whereas I think that SonnyWeems, Demar DeRozan, Jared Bayless, Ed Davis, Amir Johnson, Julian Wright, and Joey Dorsey all have a chance to improve a lot. They should be getting as many minutes as possible. Kleiza is too good to accept rotting on our bench though. It would be insulting to him, since he would know that he is currently as good or better than some of the guys listed above.
After watching some of the OKC game, I thought Kleiza would make a nice addition to their bench.
Something that I personally would love, and I think would improve OKC's chances of winning a championship this year would be to see Kleiza and Reggie Evans dealt for Morris Peterson + filler + prospect/draft pick.
MoPete's contract is expiring. I would be happy to see him back in TO (sitting on the bench).
I know a lot of people love Reggie, but if they really want him, they could still resign him next year.