Takehiro Tomiyasu and Thomas Partey both recently returned from long-term injury layoffs, but both are now stepping up their recovery programmes. Partey has featured off the bench after missing nearly six months of action with injury, but looked rusty against Sheffield United in his first game back. Tomiyasu has returned to full training, but is yet to return to first-team action, and with a tough run-in ahead, Mikel Arteta would ideally like it if he had a fully fit squad to choose from. With a long break until Arsenal face Manchester City at the end of the month, and several players away wit…