Newcastle United could have a chance this summer to sign a striker who they have wanted for a long time. That may depend on outgoings at St James’ Park, with both Alexander Isak and Callum Wilson being linked with moves away. The former is a target for Arsenal, but it seems incredibly unlikely that they will be able to afford the Magpies’ most expensive signing ever. Newcastle United do not want to sell him, nor does Isak want to leave. As for Wilson, his future is not as clear. He almost left the club in January, and there have since been suggestions that he could be sold this summer as he he…