Dortmund are said to be interested in Luis Suarez now. He has been a free agent for nearly a month. I also think that it would be nice to watch him in the Bundesliga as I would like to see him continuing to perform at a European team. It is very unfortunate to hear about Haller's condition by the way. He has got testicular cancer and it is unknown when he will be able to return to football. Suarez might be 35 years old but he is a very experienced striker too. If he adapts well he can score a lot of goals for Dortmund.
Luis Suarez is one of the strikers who is still productive even though he is not young anymore. I no longer follow the news after leaving Barcelona.
Regarding the problems that happened to the Dortmund striker, I think that Dortmund should make a plan to deal with various possibilities after Sebastien Haller was declared suffering from a testicular tumor.
Suarez could be an emergency option to replace Haller this summer. Suarez can adapt quickly even if he joins another club, I think his experience is unquestionable.